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SAND FOR CONSTRUCTION WORK

upper and lower limits, and sand is classified by size into the lower of the adjacent groups.

The security of the standard values for the content of grains less than 0.16 mm in size, as well as the content of dust and clay particles during acceptance control must be at least 97.5% for enriched sand of all types of the highest quality category, 95% for enriched sand of all types of the first quality category, 90% for natural sands and crushed screenings.

2.7. The availability of the sand fineness modulus values established by the standard is characterized by the ratio of the number of replacement samples, the fineness modulus of which is within the upper and lower standard values for a given group of sands, to total number replacement samples collected and tested within one quarter.

The level of content of grains smaller than 0.16 mm in sand, as well as dust and clay particles, established by the standard is characterized by the ratio of the number of replacement samples, the quality indicators of which do not exceed standard values, to the total number of replacement samples taken and tested during one quarter. At the same time, the provision of the standard values for the content of grains smaller than 0.16 mm, as well as dust and clay particles in enriched sands of the highest quality category is determined on the basis of statistical control in accordance with mandatory Appendix 2.

2.8. For permissible paragraphs. 2.6 and 2.7 the number of replacement samples that have deviations from regulatory requirements, the value of this deviation should not exceed 20%.

2.9. When checking the compliance of sand with the requirements of this standard, the consumer must apply the sampling procedure given in paragraphs. 2.11-2.13. If results are unsatisfactory control check Based on the grain composition and content of dust and clay particles, a batch of sand is not accepted.

point

2.10. The number of point (partial) samples taken to control the quality of sand in each batch must be no less than indicated below.

Batch volume, m 3

St. 350 to 700 15

Point samples are combined into an average sample characterizing the controlled batch.

GOST 8736-85

2.11. To control the quality of sand supplied by rail, spot samples are taken when unloading wagons from a stream of sand on belt conveyors used to transport it to the consumer’s warehouse. When unloading the car, five spot samples are taken at equal time intervals. The number of cars during unloading of which samples are taken is taken taking into account the receipt of the required number of spot samples according to clause 2.10. The cars are selected according to the instructions of the consumer. If the batch consists of one car, then during its unloading five spot samples are taken, which are combined into an average sample.

If conveyor transport is not used when unloading wagons, then, as an exception, spot samples are taken directly from the wagons. To do this, the surface of the sand in the car is leveled and holes with a depth of 0.2-0.4 m are made at the sampling points. Sampling points are taken in the center and in the four corners of the car, and the distance from the sides of the car to the sampling point must be at least 0 .5 m. Sand samples are taken from the holes with a scoop, moving it from bottom to top along the wall of the hole.

2.12. To control sand shipped by water transport, spot samples are taken when unloading ships.

When used for unloading belt conveyors, spot samples are taken at regular intervals from the flow of sand on the conveyors. When unloading ships with grab cranes, point samples are taken with a scoop at regular intervals as they are unloaded from the newly formed sand surface in the ship without forming holes.

2.13. For control check of sand shipped by car, spot samples are taken when unloading cars.

If belt conveyors are used for unloading sand, point samples are taken from the flow of sand on the conveyors. When unloading each car, one is taken away. spot test. The number of vehicles during unloading of which samples are taken is taken taking into account the receipt of the required number of partial samples according to clause 2.9. Cars are selected according to the consumer's instructions.

If the batch consists of less than ten cars, then sand will be tested in each car.

If conveyor transport is not used when unloading cars, then spot samples are taken directly from the cars. To do this, the surface of the sand in the car is leveled, a hole with a depth of

0.2-0.4 m. A sand sample is taken from the hole with a scoop, moving it from bottom to top along the wall of the hole.

3. TEST METHODS

3.1. Sampling and preparation of samples, as well as testing of sand, are carried out in accordance with GOST 8735-75.

3.2. Sampling and preparation of samples, as well as testing of rocks and gravel for strength are carried out in accordance with GOST 8269-76.

4. ROVNA BRANDS, TRANSPORTATION AND STORAGE

4.1. The manufacturing enterprise (quarry) is obliged to accompany each batch of supplied sand with a quality document established form, in which they indicate:

name of the manufacturing enterprise (quarry) and its address;

number and date of issue of the document;

name and address of the consumer;

batch number and amount of sand;

wagon numbers or vessel number and invoice number;

sand fineness module;

designation of this standard, and for sand that has been duly assigned the State Quality Mark - also its image in accordance with GOST 1.9-67.

When supplying sand from crushing screenings, the quality document also indicates the strength grade of the original rock or gravel. Sand indicators are entered into the specified document according to the test data listed in clause 2.5.

For sand supplied in accordance with clause 1.12, the quality document indicates the average grain density and the content of rocks and minerals classified as harmful impurities in accordance with GOST 23845-79 and GOST 24100-80.

4.2. Sand is transported in open railway cars and ships, as well as in cars in accordance with the rules for the transportation of goods by the appropriate mode of transport approved in accordance with the established procedure and stored in conditions that protect it from clogging and pollution.

When transporting sand by rail, the requirements must also be met Technical specifications loading and securing cargo approved by the Ministry of Railways.

GOST 6736-85

APPENDIX 1 Reference

TERMS USED IN THIS STANDARD AND THEIR EXPLANATIONS

Natural sand is sand with a grain size of up to 5 mm, formed as a result of the natural destruction of rocks and obtained during the development of sand and gravel deposits without the use of special processing equipment.

Crushed sand - sand with a grain size of up to 5 mm, made from rocks and gravel using special crushing and grinding equipment.

Sand from crushing screenings - sand with a grain size of up to 5 mm, obtained from screenings of rock crushing products during the production of crushed stone.

Enriched sand, crushed enriched sand, enriched sand from crushing screenings - sands with an improved grain composition, obtained using special enrichment equipment and supplied without separation into fractions.

Fractionated sand - sand separated using special equipment into two or more factions.

APPENDIX 2 Mandatory

STATISTICAL QUALITY CONTROL OF SAND OF THE HIGHEST CATEGORY OF QUALITY

1. Statistical control is used when assessing the quality of sand according to the standard values for the content of grains less than 0.16 mm in size, as well as the content of dust and clay particles.

2. Statistical quality control includes determining the arithmetic mean value of the assessed indicator based on the test results of replacement samples for one quarter and the coefficient of variation of the indicator values for the specified period. The resulting arithmetic mean value of the indicator is compared with the table corresponding to the calculated coefficient of variation.

3. The average value of the assessed quality indicator with the corresponding coefficient of variation should not exceed the values specified in table. 1 and 2 of this appendix.

4. The arithmetic mean value of the indicator X is determined by the formula

2**

where X is the test result of the replacement sample; l is the number of replacement samples per quarter.

5. The coefficient of variation v in percentage is determined by the formula

6. Average values of the content of grains passing through a sieve with mesh No. 016, corresponding different meanings coefficient of variation are listed in table. 1.

Table 1

Coefficient of variation v, %	Average value of the indicator. %, no more, at standard value	Coefficient of variation v, %
Coefficient of variation v, %		Coefficient of variation v, %

GOST 8736-85

7. The average values of the content of dust and clay particles, corresponding to various values of the coefficient of variation, are indicated in table. 2.

table 2

Coefficient of variation v t %	Average value of the indicator, %, no more, with standard value
Coefficient of variation v t %

Editor V. P. Ogurtsov Technical editor N. P. Zamolodchikova Proofreader A. G. Starostin

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UDC 691.223: 006.354 Group Zh17

STATE STANDARD OF THE USSR UNION

SAND FOR CONSTRUCTION WORK

Specifications

Sand for construction works. Specifications

By Decree of the USSR State Committee for Construction Affairs dated September 13, 1965 No. 146, the introduction date was established

Failure to comply with the standard is punishable by law

This standard applies to natural sand and sand from crushed screenings with an average grain density, including pores (volume mass) over 2000 kg/m 3, obtained from specially or incidentally mined rocks and waste from mining and processing enterprises and used as fillers for all types concrete and mortars, as well as construction of road pavements and other construction work.

Sand manufactured according to this standard must be used in accordance with current regulatory and technical documents.

Explanations of terms used in this standard are given in Reference Appendix 1.

1. TECHNICAL REQUIREMENTS

1.2. Sand is divided into the following types:

natural and enriched;

Official publication

from crushing screenings and enriched from crushing screenings. It is possible to supply a mixture of natural sand and crushed screenings.

Reproduction is prohibited

GOST 8736-85

1.3. By agreement between the manufacturing enterprise (quarry) and the consumer, crushed and fractionated sands are supplied, the requirements for which are established in technical specifications approved in the prescribed manner.

1.4. Sand must have the following quality indicators:

grain composition;

1.5. Sand from crushing screenings is also characterized by the tensile strength of the original rock during compression in a water-saturated state.

An enterprise (quarry) producing natural and enriched sands must have and inform the consumer upon his request the following characteristics established during geological exploration in accordance with GOST 24100-80:

mineralogical and petrographic composition indicating rocks and minerals classified as harmful impurities;

indicator of the potential reactivity of sand, determined chemical method(if there are reactive minerals and rocks in the sand);

description of the shape and nature of the surface of sand grains;

average density of sand grains.

If during geological exploration, at the request of the customer, additional characteristics of sands were determined in accordance with GOST 24100-80: voids, specific surface,

filtration coefficient, then they must also be communicated to the consumer upon his request.

An enterprise (quarry) producing sand from crushing screenings must have and report to the consumer, upon request, the petrographic characteristics and indicators of the physical and mechanical properties of the original rock, established during geological exploration in accordance with GOST 23845-79.

1.6. Grain composition

1.6.1. Natural sands and from crushed screenings, depending

based on grain composition are divided into groups: increased

size, large, medium, small and very small.

1.6.2. Enriched sand depending on grain composition

are divided into groups: increased size, large, medium and small. Enriched sand from crushing screenings, depending on the grain composition, is divided into groups: according to

high size, large and medium.

1.6.3. For each group of sands: natural and from crushing screenings, enriched and enriched from crushing screenings

after preliminary sieving them on a sieve with holes measuring 5 mm to isolate gravel grains (crushed stone), the sand fineness modulus M k and the total residue on a sieve with mesh No. 063 according to GOST 3584-73 must correspond to those indicated in the table. 1.

Table 1

	The module whines a lot" Lk	Total residue on sieve L 063>% by weight	applications
Increased size	St. 3.0 to 3.5	St. 65 to 75	Fillers for concrete, materials for road pavement construction
			Fillers for concrete and mortars, materials for road construction


Very small			Aggregates for mortars

If, when determining the sand group, it corresponds in terms of size modulus to one group, and in terms of the total residue on sieve No. 063 - to another, then the determination of the sand group is carried out according to the size module.

In this case, the passport indicates the deviation of the value of the total residue on sieve No. 063 from that indicated in the table. 1 for sand of this group.

Notes: 1. By agreement of the parties, it is possible to supply sand with a particle size module greater than 3.5.

2. Very fine sand with a fineness modulus of 1.0 to 1.5 is supplied only by customer order for use in plaster mortars, as well as for use in a mixture with a coarsening additive as fine aggregates for concrete in areas where there are no sand deposits with a particle size module over 1.5,

1.6.4. As fine aggregates for concrete, natural and enriched sands, sands from crushing screenings and enriched from crushing screenings of increased size, large, medium and small with a fineness modulus from 1.5 to 3, should be supplied and used in accordance with the requirements of GOST 10268-80, 25.

The grain composition of the fine aggregate should be as specified below.

GOST 8736-85

Total residues on control sieves, % by weight

20-70 . 35-90 . 90-100 . 10-0 . 1,5-3,25

Test sieve hole size, mm

Passage through sieve JVb 016 Size modulus

In this case, only grains passing through a sieve with round holes with a diameter of 5 mm.

The use of sand from crushing screenings and enriched sand from crushing screenings and their mixtures with natural fine and very fine sands as fine aggregates is permitted provided that the specified workability is ensured concrete mixture without excess consumption of cement.

By agreement between the manufacturing enterprise (quarry) and the consumer during a feasibility study, it is allowed to supply sand for concrete with a fineness modulus of up to 3.5, as well as with a full residue on sieve No. 063 of up to 75%.

As materials for the construction of road pavements, natural and enriched sands, sands from crushing screenings and enriched from crushing screenings of increased size, large, medium and small must be supplied and used in accordance with the requirements of regulatory and technical documents.

Sands that meet the requirements of clause 1.6.7 must be supplied and used as fillers for mortars:

medium, fine and very fine natural sands;

medium and fine enriched sands.

in natural sands and from crushing screenings of increased fineness, coarse and medium. . . , . . .10

the same, in small and very small.......15

in enriched sand of increased fineness, coarse

and average...............5

the same, in small.........10

in enriched sand from crushing screenings.... 5

By agreement of the manufacturer (quarry) with the consumer, in medium, fine and very fine sands intended for mortars and road construction works, as well as in sand from crushing screenings intended for road construction works, the content of grains passing through the sieve with mesh No. 016, up to 20% by weight is allowed.

1.6.6. The presence of grains larger than 5 mm should not exceed % by weight:

in natural sand. . . . -.......10

in sand from crushing screenings........15

in enriched sand and enriched sand from crushing screenings......5

1.6.7. For the production of mortars (except for plaster mortars for the finishing layer), medium natural and medium enriched sands with a fineness modulus not exceeding 2.2, as well as fine natural and fine enriched sands, must be supplied and used. The content of grains larger than 5 mm in sand for mortars should not exceed 0.5% by weight.

To make plaster mortars for the finishing layer, very fine sand must be supplied and used. The content of grains larger than 1.25 mm in sands used in plaster mortars for the finishing layer should not exceed 0.5% by weight -

By agreement between the manufacturing enterprise (quarry) and the consumer, it is allowed to supply and use for construction mortars (except for plaster mortars for the finishing layer) medium natural sand and medium enriched sand, in which the content of grains larger than 5 mm does not exceed 5% by weight. For the manufacture of plaster mortar for the finishing layer, it is allowed to supply and use very fine natural sand, in which the content of grains larger than 1.25 mm does not exceed 5% by weight.

1.7. The amount of dust and clay particles in the sand should not exceed the values indicated in the table. 2.

table 2

Type of sand		Including clay content in lumps
	% by weight.
Natural: extra coarse, large and medium
small and very small
Enriched: coarse and medium

From crushing screenings
Enriched from crushing screenings		In sand from crushed screenings intended for road construction work, and in natural very fine sand intended for use in plaster mortars for the finishing layer, the content of dust and clay particles up to 7% by weight is allowed. Sand of all types should not contain foreign contaminants. 1.8. Sand intended for concrete and mortars, when treated with a solution of sodium hydroxide (colorimetric test for organic impurities according to GOST 8735-75), should not give the solution a color that matches or is darker than the color of the standard. The use of sand that does not meet this requirement is allowed only after special tests and a feasibility study. 1.9. Igneous, metamorphic or dense sedimentary rocks and gravel must be used to produce crushed screening sand and enriched crushed screening sand. Depending on the strength of the original rock and gravel, sands are divided into four grades: 1000, 800, 600 and 400. The strength of the original rock and gravel must correspond to that indicated in the table. 3. Table 3 Igneous and metamorphic rocks used to produce sand from crushing screenings must have a compressive strength of at least 60 MPa (600 kgf/cm2), and sedimentary rocks - at least 40 MPa (400 kgf/cm2). By agreement between the manufacturer and the consumer, it is allowed to produce sand obtained from screenings of crushing sedimentary rocks having a compressive strength below 40 MPa (400 kgf/cm2), but not less than 20 MPa (200 kgf/cm2). 1.10. Rocks and gravel used to produce sand from crushing screenings should not contain weak differences in an amount of more than 10% by weight, and rocks with a compressive strength below 40 MPa GOST 8736-85 Page. 7 (400 kgf/cm 2), and gravel grade Dr24 - no more than 15% by weight. With a higher content of weak varieties, it is allowed to use only screenings obtained after the second and subsequent stages of crushing. Weak rocks include rocks with a compressive strength in a water-saturated state of less than 20 MPa (200 kgf/cm2). 1.11. The quality of the mixture of natural sand and sand from crushing screenings must meet the requirements of this standard for the quality of sand from crushing screenings. 1.12. Sand from associated rocks and waste from mining and processing enterprises, having an average grain density of more than 2800 kg/m 3 or containing grains of rocks and minerals classified as harmful impurities according to GOST 23845-79 and GOST 24100-80, must be produced according to industry and republican regulations. standards or specifications. At the same time, for each deposit or group of deposits there must be restrictions on the maximum value of average density and on the content of rocks and minerals classified as harmful impurities according to GOST 23845-79 and GOST 24100-80, as well as methods for determining the content of rocks and minerals classified as harmful impurities. Limitations on the average density and content of rocks and minerals classified as harmful impurities are established on the basis of special studies depending on the purpose of the sand and the operating conditions of the structures in which it is used. 2. ACCEPTANCE RULES 2.1. Sand produced by the manufacturing enterprise (quarry) must be accepted by the technical control of this enterprise. The manufacturing enterprise (quarry) must ensure that the sand complies with the requirements of this standard. 2.2. Sand is supplied in batches. The amount of sand simultaneously shipped to one consumer in one train or in one ship is considered a batch. When shipping by road, a batch is considered to be the amount of sand shipped to one consumer per day. 2.3. The quantity of sand supplied is determined by volume or weight. Sand is measured in wagons, ships and cars. Weighing of sand shipped in wagons or cars is carried out on railway or truck scales. /The mass of sand shipped in ships is determined by the vessel’s draft. GOST 8736-85 2.4. Conversion of the amount of sand from weight units to volumetric units is carried out according to the values bulk density sand, determined in a state of natural humidity. When wet technological processes sand production, the moisture content of the supplied sand and the bulk density used to convert the amount of sand from weight units to volume units are established by agreement between the manufacturing enterprise (quarry) and the consumer, taking into account the conditions of sand extraction2, quarry operating experience, geological exploration data, time of year, as well as sand compaction coefficients when loading it into vehicles. 2.5. Acceptance quality control of sand at the manufacturing enterprise (quarry) consists of determining the grain composition, the content of dust and clay particles, including clay. lumps. Sand quality control according to the specified indicators is carried out daily using one replacement sample in accordance with GOST 8735-75. The bulk density of sand is determined once a quarter. For sand obtained from associated rocks and waste from mining and processing enterprises, in addition, the average density of grains and the content of inclusions of rocks and minerals classified as harmful impurities are determined. These indicators determine changes in the properties of sand in each case, but at least once a year. For the specified sand supplied in accordance with clause 1.12, the frequency of determining the average density and content of rocks and minerals classified as harmful impurities is established by industry, republican standards or technical specifications, but these determinations must be made at least once a quarter. 2.6. Provision of the sand fineness modulus values established by the standard, indicated in table. 1 for each group of sand, during acceptance inspection according to paragraphs. 2.6-2.8 must be at least 95% for enriched sand of all types of the highest quality category, at least 90% for enriched sand of all types of the first quality category and at least 80% for natural sands and from crushing screenings. By agreement between the manufacturer and the consumer, it is permitted to supply sand whose fineness modulus values are within the standard values specified in Table. 1 for two adjacent groups of sand, if the difference between the upper and lower limits of the particle size modulus does not exceed 0.5. In this case, accept the above for various types sand requirements for the provision of particle size modulus values within

GOST 8736-93

Group Zh17

INTERSTATE STANDARD

SAND FOR CONSTRUCTION WORK

Specifications

Sand for construction works. Specifications

MKS 91.100.15
OKSTU 5711

Date of introduction 1995-07-01

Preface

1 DEVELOPED by the VNIPIStroysyrye Institute with the participation of SoyuzDorNII, NIIZhB, TsNIIOMTP of the Russian Federation

INTRODUCED by the Ministry of Construction of Russia

2 ADOPTED by the Interstate Scientific and Technical Commission for Standardization and Technical Regulation in Construction (INTKS) on November 10, 1993.


State name
The Republic of Azerbaijan
Republic of Armenia	State Architecture of the Republic of Armenia
Republic of Belarus	Gosstroy of the Republic of Belarus
The Republic of Kazakhstan	Ministry of Construction of the Republic of Kazakhstan
Republic of Kyrgyzstan	Gosstroy of the Kyrgyz Republic
The Republic of Moldova	Ministry of Architecture and Construction of the Republic of Moldova
Russian Federation	Gosstroy of Russia
The Republic of Tajikistan
The Republic of Uzbekistan

Change No. 1 was adopted by the Interstate Scientific and Technical Commission for Standardization, Technical Regulation and Certification in Construction (MNTKS) on December 10, 1997.


State name	Name of body government controlled construction
The Republic of Azerbaijan	State Construction Committee of the Azerbaijan Republic
Republic of Armenia
Republic of Belarus
The Republic of Kazakhstan	Agency for Construction and Architectural and Urban Planning Control of the Ministry of Economy and Trade of the Republic of Kazakhstan
Kyrgyz Republic	Ministry of Architecture and Construction of the Kyrgyz Republic
Russian Federation	Gosstroy of Russia
The Republic of Tajikistan	State Construction Committee of the Republic of Tajikistan

Change No. 2 was adopted by the Interstate Scientific and Technical Commission for Standardization, Technical Regulation and Certification in Construction (MNTKS) on May 17, 2000.

The following voted to approve the change:


State name	Name of the state construction management body
The Republic of Azerbaijan	State Construction Committee of the Azerbaijan Republic
Republic of Armenia	Ministry of Urban Development of the Republic of Armenia
Republic of Belarus	Ministry of Construction and Architecture of the Republic of Belarus
The Republic of Kazakhstan	Committee for Construction Affairs of the Ministry of Energy, Industry and Trade of the Republic of Kazakhstan
Republic of Kyrgyzstan	State Committee under the Government of the Kyrgyz Republic for Architecture and Construction
The Republic of Moldova	Ministry environment and improvement of territories of the Republic of Moldova
Russian Federation	Gosstroy of Russia
The Republic of Tajikistan	Committee for Architecture and Construction of the Republic of Tajikistan
The Republic of Uzbekistan	State Committee for Architecture and Construction of the Republic of Uzbekistan

3 ENTERED INTO EFFECT on July 1, 1995 as state standard Russian Federation by Resolution of the Ministry of Construction of Russia dated November 28, 1994 N 18-29

4 INSTEAD GOST 8736-85, GOST 26193-84

5 EDITION (March 2006) with Amendments N, adopted in February 1998, December 2000 (IUS 5-98, 5-2001)

Amendment No. 3 was introduced, adopted by the Interstate Scientific and Technical Commission for Standardization, Technical Regulation and Conformity Assessment in Construction (MNTKS) (Minutes No. 38 of 03/18/2011). Developer state Russia. By order of the Federal Agency for Technical Regulation and Metrology dated October 13, 2011 N 452-st, it came into force on the territory of the Russian Federation from January 1, 2012

Change No. 3 was made by the database manufacturer according to the text of IMS No. 1, 2012

1 area of use

This standard applies to natural rock sand with a true grain density of 2.0 to 2.8 g/cm, intended for use as a filler for heavy, light, fine-grained, cellular and silicate concrete, mortars, preparation of dry mixes, for construction foundations and coatings of highways and airfields.

The requirements of this standard do not apply to graded and crushed sands.

The requirements of this standard, set out in paragraphs 4.4.1, 4.4.3, 4.4.7, 4.4.8, sections 5 and 6, are mandatory.

(Changed edition, Amendment No. 3).

2 Normative references

GOST 8267-93 Crushed stone and gravel from dense rocks for construction work. Specifications

GOST 8269.0-97 Crushed stone and gravel from dense rocks and industrial waste for construction work. Methods of physical and mechanical tests

GOST 8735-88 Sand for construction work. Test methods

GOST 30108-94 Construction materials and products. Determination of specific effective activity of natural radionuclides

3 Definitions

The following terms are used in this standard.

natural sand: Inorganic bulk material with a grain size of up to 5 mm, formed as a result of the natural destruction of rocks and obtained during the development of sand and sand-gravel deposits without or using special processing equipment.

crushed sand: Sand with a grain size of up to 5 mm, made from rocks and gravel using special crushing and grinding equipment.

graded sand: Sand separated into two or more fractions using special equipment.

(Changed edition, Amendment No. 1,).

4 Technical requirements

4.1 Sand must be manufactured in accordance with the requirements of this standard according to technological documentation approved by the manufacturer.

4.2 Sand, depending on the values of standardized quality indicators (grain composition, content of dust and clay particles) is divided into two classes I and II.

(Changed edition, Amendment No. 3).

4.3 Main parameters and dimensions

4.3.1 Depending on the grain composition, sand of classes I and II is divided into groups according to size:

class I - increased size, large, medium and small;

class II - increased coarseness, large, medium, small, very small, thin and very thin.

(Changed edition, Amendment No. 3).

4.3.2 Each sand group is characterized by the particle size modulus value indicated in Table 1.

Table 1


Sand group	Size module Mk
Increased size
Large
Average
Small
Very small
Thin
Very thin

(Changed edition, Amendment No. 3).

4.3.3 The total sand residue on the sieve with mesh No. 063 must correspond to the values specified in Table 2.

table 2

Percentage by weight


Sand group	Complete residue on sieve N 063
Increased size
Large
Average
Small
Very small
Thin	Not standardized
Very thin
Note - By agreement between the manufacturer and the consumer, in class II sand, deviation of the total residue on sieve N 063 from the above is allowed, but not more than ±5%.

(Changed edition, Amendment No. 3).

Table 3


Sand class and group
	St. 10 mm	Less than 0.16mm
I class

Small
II class
Increased size
Large and medium
Small and very small
Thin and very thin	Not allowed	Not standardized

(Changed edition, Amendment No. 3).

4.4 Characteristics

Table 4

Percentage by weight, no more


Sand class and group
Class I
Extra fine, large and medium
Small
Class II
Extra fine, large and medium
Small and very small
Thin and very thin
Note - By agreement with the consumer, in very fine sand of class II, the content of dust and clay particles up to 7% by weight is allowed.

(Changed edition, Amendment No. 3).

4.4.2 (Deleted, Amendment No. 3).

4.4.3 Sand intended for use as a filler for concrete must be resistant to the chemical effects of cement alkalis.

The durability of sand is determined by its mineralogical and petrographic composition and the content of harmful components and impurities. The list of rocks and minerals classified as harmful components and impurities and their maximum permissible contents are given in Appendix A.

4.4.4, 4.4.5 (Deleted, Amendment No. 3).

4.4.6 The manufacturer must inform the consumer of the following characteristics established by geological exploration:

Mineralogical and petrographic composition indicating rocks and minerals classified as harmful components and impurities;

Emptiness;

The true density of sand grains.

4.4.7 Natural sand, when treated with a solution of sodium hydroxide (colorimetric test for organic impurities according to GOST 8735), should not give the solution a color that matches or is darker than the color of the standard.

4.4.8 The sand must be given a radiation-hygienic assessment, based on the results of which the scope of its application is determined. Sand, depending on the specific effective activity of natural radionuclides, is used:

At up to 370 Bq/kg - in newly constructed residential and public buildings;

- at St. 370 to 740 Bq/kg - for road construction within the territory of settlements and areas of prospective development, as well as during the construction of industrial buildings and structures;

At St. 740 to 1500 Bq/kg - in road construction outside populated areas.

If necessary, in national standards in force on the territory of the state, the value of the specific effective activity of natural radionuclides can be changed within the limits specified above.

(Changed edition, Amendment No. 1, 2).

4.4.9 Sand should not contain foreign contaminants.

5 Acceptance rules

5.1 Sand must be accepted by the technical control service of the manufacturer.

5.2 To verify compliance of sand quality with the requirements of this standard, acceptance and periodic tests are carried out.

5.3 Acceptance tests at the manufacturer are carried out daily by testing one replacement sample taken in accordance with GOST 8735 from each production line.

During acceptance control the following is determined:

Grain composition;

5.4 During periodic testing of sand, determine:

Once a quarter - bulk density (bulk density at humidity during shipment is determined as necessary), as well as the presence of organic impurities (humic substances) in natural sand;

Once a year and in each case of changes in the properties of the rock being mined - true density grains, content of rocks and minerals classified as harmful components and impurities, specific effective activity of natural radionuclides.

Periodic monitoring of the specific effective activity of natural radionuclides is carried out in specialized laboratories duly accredited for the right to conduct gamma spectrometric tests or in radiation metric laboratories of supervisory authorities.

In the absence of geological survey data on the radiation-hygienic assessment of the deposit and a conclusion on the class of sand, the manufacturer carries out a radiation-hygienic assessment of the developed rock sections using the express method directly at the mine face or in warehouses finished products(alluvium map) in accordance with the requirements of GOST 30108.

(Changed edition, Amendment No. 3).

5.5 Selection and preparation of sand samples for quality control at the manufacturing plant is carried out in accordance with the requirements of GOST 8735.

5.6 Delivery and acceptance of sand is carried out in batches. A batch is considered to be a quantity of material simultaneously supplied to one consumer in one train or in one vessel. When shipping by road, a batch is considered to be the amount of sand shipped to one consumer per day.

5.7 When checking the quality of sand, the consumer must use the sampling procedure given in 5.8-5.11. If the results of the control check on the grain composition and the content of dust and clay particles are unsatisfactory, the batch of sand will not be accepted.

5.8 The number of spot samples taken to control the quality of sand in each batch, depending on the volume of the batch, must be at least:


	Batch size	Number of spot samples

	St. 350 to 700 m

From the spot samples, a combined sample is formed that characterizes the controlled batch. Averaging, reduction and sample preparation are carried out according to GOST 8735.

5.9 To control the quality of sand shipped by rail, spot samples are taken when unloading cars from the flow of sand on belt conveyors used to transport it to the consumer’s warehouse. When unloading the car, five spot samples are taken at equal time intervals. The number of cars is determined taking into account the receipt of the required number of spot samples in accordance with 5.8.

Cars are selected according to the instructions of the consumer. If the batch consists of one wagon, five spot samples are taken during unloading, from which a combined sample is obtained.

If continuous transport is not used during unloading, spot samples are taken directly from the cars. To do this, the surface of the sand in the car is leveled and holes 0.2-0.4 m deep are dug at the sampling points. Sampling points should be located in the center and in the four corners of the car, and the distance from the sides of the car to the sampling points should be not less than 0.5 m. Samples are taken from the holes with a scoop, moving it from bottom to top along the walls of the hole.

5.10 To control the quality of sand supplied by water transport, spot samples are taken when unloading ships. When belt conveyors are used for unloading, spot samples are taken at regular intervals from the sand flow on the conveyors. When unloading a vessel with grab cranes, point samples are taken with a scoop at regular intervals as unloading proceeds, directly from the newly formed sand surface in the vessel, and not from the holes.

For control testing of sand unloaded from ships and placed on alluvial maps using hydromechanization, spot samples are taken in accordance with 2.9 GOST 8735.

5.11. To control the quality of sand shipped by road, spot samples are taken when unloading vehicles.

If belt conveyors are used for unloading sand, point samples are taken from the flow of sand on the conveyors. When unloading each vehicle, one spot sample is taken. The number of cars is determined taking into account the receipt of the required number of spot samples according to 5.8. Cars are selected according to the consumer's instructions.

If the lot consists of less than ten cars, sand samples are taken from each car.

If conveyor transport is not used when unloading cars, spot samples are taken directly from the cars. To do this, the surface of the sand in the car is leveled, a hole 0.2-0.4 m deep is dug in the center of the body. Sand samples are taken from the hole with a scoop, moving it from bottom to top along the wall of the hole.

5.12 The quantity of sand supplied is determined by volume or weight. Sand measurements are carried out in wagons, ships or cars.

Sand shipped in wagons or cars is weighed on truck scales. The mass of sand shipped in ships is determined by the vessel's draft.

The amount of sand from units of mass to units of volume is recalculated based on the bulk density of sand, determined by its moisture content during shipment. The supply contract specifies the calculated sand moisture content accepted by agreement of the parties.

5.13 The manufacturer is obliged to accompany each batch of supplied sand with a document on its quality in the established form, which must indicate:

Name of the manufacturer and its address;

Number and date of issue of the document;

Batch number and amount of sand;

Numbers of wagons and vessel number, invoice numbers;

Class, fineness module, total residue on sieve N 063;

Specific effective activity of natural radionuclides in sand in accordance with 5.4;

Designation of this standard.

6 Control methods

6.1 Sand tests are carried out in accordance with GOST 8735.

6.2. The specific effective activity of natural radionuclides in sand is determined according to GOST 30108.

7 Transportation and storage

7.1 Sand is transported in open railway cars and ships, as well as cars in accordance with the rules for the transportation of goods approved in the established manner by the appropriate mode of transport and stored in the warehouse of the manufacturer and consumer under conditions that protect the sand from contamination.

When transporting sand by rail, it must also be ensured that the requirements of the Technical Conditions for loading and securing cargo applicable to this type of transport are met.

(Changed edition, Amendment No. 3).

7.2 When shipping and storing sand in winter time the manufacturer must take measures to prevent freezing (shovelling, processing special solutions and so on.).

APPENDIX A (mandatory). Content of harmful impurities

APPENDIX A
(required)

The permissible content of rocks and minerals classified as harmful components and impurities in sand used as a filler for concrete and mortars should not exceed the following values:

Amorphous varieties of silicon dioxide, soluble in alkalis (chalcedony, opal, flint, etc.) - no more than 50 mmol/l;

Sulfur, sulfides, except pyrite (marcasite, pyrrhotite, etc.) and sulfates (gypsum, anhydrite, etc.) in terms of SO - no more than 1.0%; pyrite in terms of SO - no more than 4% by weight;

Mica - no more than 2% by weight;

Halide compounds (halite, sylvite, etc.), including water-soluble chlorides, in terms of chlorine ion - no more than 0.15% by weight;

Coal - no more than 1% by weight;

Organic impurities (humic acids) - less than the amount that gives the sodium hydroxide solution (colorimetric test according to GOST 8267) a color corresponding to the color of the standard or darker than this color. The use of sand that does not meet this requirement is permitted only after positive results have been obtained from tests of sand in concrete or mortar for durability characteristics.

The permissible content of zeolite, graphite, and oil shale is established based on studies of the effect of sand on the durability of concrete or mortar.

APPENDIX B (Deleted, Amendment No. 2).

Electronic document text

prepared by Kodeks JSC and verified against:

official publication
M.: Standartinform, 2006

Revision of the document taking into account
changes and additions prepared
JSC "Kodeks"

GOST 8736-93

INTERSTATE STANDARD

SAND FOR CONSTRUCTION WORK

TECHNICAL CONDITIONS

INTERSTATE SCIENTIFIC AND TECHNICAL COMMISSION
ON STANDARDIZATION AND TECHNICAL REGULATION
IN CONSTRUCTION (MNTKS)
Moscow

Preface

1 DEVELOPED by the VNIPIIstromsyrye Institute with the participation of SoyuzDorNII, NIIZhB, TsNIIOMTP of the Russian Federation

INTRODUCED by the Ministry of Construction of Russia

2 ADOPTED by the Interstate Scientific and Technical Commission for Standardization and Technical Regulation in Construction (INTKS) on November 10, 1993.

State name
The Republic of Azerbaijan
Republic of Armenia	State Architecture of the Republic of Armenia
Republic of Belarus	Gosstroy of the Republic of Belarus
The Republic of Kazakhstan	Ministry of Construction of the Republic of Kazakhstan
Republic of Kyrgyzstan	Gosstroy of the Kyrgyz Republic
The Republic of Moldova	Ministry of Architecture and Construction of the Republic of Moldova
Russian Federation	Gosstroy of Russia
The Republic of Tajikistan
The Republic of Uzbekistan

Change No. 1 was adopted by the Interstate Scientific and Technical Commission for Standardization, Technical Regulation and Certification in Construction (MNTKS) on December 10, 1997.

State name	Name of the state construction management body
The Republic of Azerbaijan	State Construction Committee of the Azerbaijan Republic
Republic of Armenia
Republic of Belarus
The Republic of Kazakhstan	Agency for Construction and Architectural and Urban Planning Control of the Ministry of Economy and Trade of the Republic of Kazakhstan
Republic of Kyrgyzstan	Ministry of Architecture and Construction of the Kyrgyz Republic
Russian Federation	Gosstroy of Russia
The Republic of Tajikistan	State Construction Committee of the Republic of Tajikistan

Change No. 2 was adopted by the Interstate Scientific and Technical Commission for Standardization, Technical Regulation and Certification in Construction (MNTKS) on May 17, 2000.

State name	Name of the state construction management body
The Republic of Azerbaijan	State Construction Committee of the Azerbaijan Republic
Republic of Armenia	Ministry of Urban Development of the Republic of Armenia
Republic of Belarus	Ministry of Construction and Architecture of the Republic of Belarus
The Republic of Kazakhstan	Committee for Construction Affairs of the Ministry of Energy, Industry and Trade of the Republic of Kazakhstan
Republic of Kyrgyzstan	State Committee under the Government of the Kyrgyz Republic for Architecture and Construction
The Republic of Moldova	Ministry of Environment and Territorial Improvement of the Republic of Moldova
Russian Federation	Gosstroy of Russia
The Republic of Tajikistan	State Construction Committee of the Republic of Tajikistan
The Republic of Uzbekistan	State Committee for Architecture and Construction of the Republic of Uzbekistan

3 ENTERED INTO EFFECT on July 1, 1995 as a state standard of the Russian Federation by Resolution of the Ministry of Construction of Russia dated November 28, 1994 No. 18-29

4 INSTEAD GOST 8736-85, GOST 26193-84

5 EDITION (July 2009) with Amendments No. 1, 2, adopted in February 1998, December 2000 (IUS 5-98, 5-2001)

INTERSTATE STANDARD

SAND FOR CONSTRUCTION WORK

Technicalconditions

Sand for construction works. Specifications

dateintroduction1995-07-01

1 AREA OF USE

This standard applies to natural sand and sand from rock crushing screenings with a true grain density of 2.0 to 2.8 g/cm 3, intended for use as a filler for heavy, light, fine-grained, cellular and silicate concrete, mortars, preparation of dry mixtures for the construction of bases and coatings of highways and airfields.

The requirements of this standard do not apply to graded and crushed sands.

The requirements of this standard, set out in paragraphs , , , , sections and , are mandatory.

2 REGULATORY REFERENCES

This standard uses references to the following standards.

Full residue on sieve No. 063

Very large

Increased size

Very small

Not standardized

Very thin

Note - By agreement between the manufacturer and the consumer, in class II sand, deviation of the total residue on sieve No. 063 from the above is allowed, but not more than ±5%.

4.3.4 Content of grains of coarseness. 10.5 and less than 0.16 mm should not exceed the values specified in the table.

Table 3

Percentage by weight, no more


		Less than 0.15mm




Extra large and extra fine
Large and medium
Small and very small
Thin and very thin	Not allowed	Not standardized

4.4Characteristics

in natural sand

in sand from crushing screenings

in natural sand

in sand from crushing screenings

Very large

Increased size. large and medium

Very large

Extra fine, large and medium

Small and very small

Thin and very thin

Not standardized

* For sands obtained during the enrichment of ores of ferrous and non-ferrous metals and non-metallic minerals from other industries.

Note - In very fine natural sand of class II, in agreement with the consumer, the content of dust and clay particles up to 7% by weight is allowed.

4.4.2 Sands from crushing screenings are divided into grades depending on the strength of rock and gravel. Igneous and metamorphic rocks must have a compressive strength of at least 60 MPa, sedimentary rocks - at least 40 MPa.

The grade of sand from crushing screenings must correspond in strength to that indicated in the table.

Table 5

	Ultimate compressive strength of rock in a water-saturated state, MPa, not less	Gravel grade according to crushability in the cylinder






Note - It is allowed, by agreement between the manufacturer and the consumer, to supply sand II from sedimentary rocks with a compressive strength of less than 40 MPa, but not less than 20 MPa.

The durability of sand is determined by its mineralogical and petrographic composition and the content of harmful components and impurities. The list of rocks and minerals classified as harmful components and impurities, and their maximum permissible contents, is given in the Appendix.

4.4.4 Sand from rock crushing screenings, having a true grain density of more than 2.8 g/cm 3 or containing grains of rocks and minerals classified as harmful components in an amount exceeding their permissible content, or containing several different harmful components, is released for specific types of construction work technical documents, developed in accordance with the established procedure and agreed with laboratories specialized in the field of corrosion.

4.4.5 It is allowed to supply a mixture of natural sand and sand from crushing screenings with a content of the latter of at least 20% by weight, and the amount of the mixture must meet the requirements of this standard for the quality of sand from crushing screenings.

4.4.6 The manufacturer must inform the consumer of the following characteristics established by geological exploration:

Mineralogical and petrographic composition indicating rocks and minerals classified as harmful components and impurities;

Emptiness;

The true density of sand grains.

At A eff up to 370 Bq/kg - in newly constructed residential and public buildings;

At A eff St. 370 to 740 Bq/kg - for road construction within the territory of settlements and areas of prospective development, as well as during the construction of industrial buildings and structures;

At A eff St. 740 to 1500 Bq/kg - in road construction and stumps of populated areas.

If necessary, in national standards in force on the territory of the state, the value of the specific effective activity of natural radionuclides can be changed within the limits specified above.

(Changed edition. Amendment No. 1, 2).

4.4.9 Sand should not contain foreign contaminants.

5 ACCEPTANCE RULES

5.1 Sand must be accepted by the technical control service of the manufacturer.

5.2 To verify compliance of sand quality with the requirements of this standard, acceptance and periodic tests are carried out.

5.3 Acceptance tests at the manufacturer are carried out daily by testing one replacement sample taken in accordance with GOST 8735 from each production line.

During acceptance control the following is determined:

Grain composition;

Once a quarter - bulk density (bulk density at humidity during shipment is determined as necessary), as well as the presence of organic impurities (humic substances) in natural sand;

Once a year and in each case, changes in the properties of the rock being mined - the true density of grains, the content of rocks and minerals classified as harmful components and impurities, the strength grade of sand from crushing screenings, the specific effective activity of natural radionuclides.

In the absence of geological survey data on the radiation-hygienic assessment of the deposit and a conclusion on the class of sand, the manufacturer carries out a radiation-hygienic assessment of the mined rock sections using the express method directly at the mine face or in finished product warehouses (alluvium map) in accordance with the requirements of GOST 30108 .

5.5 Selection and preparation of sand samples for quality control at the manufacturing plant is carried out in accordance with the requirements of GOST 8735.

5.7 When checking the quality of sand, the consumer must use the sampling procedure given in -. If the results of the control check on the grain composition and the content of dust and clay particles are unsatisfactory, the batch of sand will not be accepted.

Batch sizeNumber of spot samples

Up to 350 m................................................... ...................................10

St. 350 to 700 m............................................ .........................15

St. 700 m................................................... ....................................10

From the spot samples, a combined sample is formed that characterizes the controlled batch. Averaging, reduction and sample preparation are carried out according to GOST 8735.

Cars are selected according to the instructions of the consumer. If the batch consists of one wagon, five spot samples are taken during unloading, from which a combined sample is obtained.

For control testing of sand unloaded from ships and placed on alluvial maps using hydromechanization, spot samples are taken in accordance with 2.9 GOST 8735.

If belt conveyors are used for unloading sand, point samples are taken from the flow of sand on the conveyors. When unloading each vehicle, one spot sample is taken. The number of cars is determined taking into account the receipt of the required number of point samples according to. Cars are selected according to the consumer's instructions.

If the lot consists of less than ten cars, sand samples are taken from each car.

5.12 The quantity of sand supplied is determined by volume or weight. Sand measurements are carried out in wagons, ships or cars.

Sand shipped in wagons or cars is weighed on truck scales. The mass of sand shipped in ships is determined by the vessel's draft.

5.13 The manufacturer is obliged to accompany each batch of supplied sand with a document on its quality in the established form, which must indicate:

Name of the manufacturer and its address;

Number and date of issue of the document;

Batch number and amount of sand;

Numbers of wagons and vessel number, invoice numbers;

Class, fineness module, total residue on sieve No. 063;

Specific effective activity of natural radionuclides in sand in accordance with;

Designation of this standard.

6 CONTROL METHODS

6.1 Sand tests are carried out in accordance with GOST 8735.

6.2 The specific effective activity of natural radionuclides in sand is determined according to GOST 30108.

7 TRANSPORTATION AND STORAGE

7.1 Sand is transported in open railway cars and ships, as well as cars in accordance with the rules for the carriage of goods by the appropriate mode of transport approved in the established manner and stored in the warehouse of the manufacturer and consumer under conditions that protect the sand from contamination.

When transporting sand by rail, compliance with the requirements of the Technical Conditions for Loading and Securing Cargo, approved by the Ministry of Railways, must also be ensured.

7.2 When shipping and storing sand in winter, the manufacturer must take measures to prevent freezing (shovelling, treatment with special solutions, etc.).

APPENDIX A
(required)
CONTENT OF HARMFUL IMPURITIES

The permissible content of rocks and minerals classified as harmful components and impurities in sand used as a filler for concrete and mortars should not exceed the following values:

Amorphous varieties of silicon dioxide, soluble in alkalis (chalcedony, opal, flint, etc.) - no more than 50 mmol/l;

Sulfur, sulfides, except pyrite (marcasite, pyrrhotite, etc.) and sulfates (gypsum, anhydrite, etc.) in terms of SO 3 - no more than 1.0%, pyrite in terms of SO 3 - no more than 4% by weight;

Mica - no more than 2% by weight:

Halide compounds (halite, sylvite, etc.), including water-soluble chlorides, in terms of chlorine ion - no more than 0.15% by weight;

Coal - no more than 1% by weight;

The permissible content of zeolite, graphite, and oil shale is established based on studies of the effect of sand on the durability of concrete or mortar.

APPENDIX B (Deleted. Amendment No. 2).

Keywords:natural sand, construction work, sand from crushed screenings, fractionated sand, crushed sand, grain composition

Sieve cell sizes, mm 2.5 1.25 0.63 0.315 0.16 m.016

partial residues on sieves, in% 0.9 6.2 5.8 18.9 46.8 21.4

total residues on sieves, in% 0.9 7.1 12.9 31.8 78.6 100

Humidity level 1 2 3 4 5 6

volumetric weight of wet soil Yj 1.88 1.93 1.96 2.00 2.03 2.00

volumetric weight of the soil skeleton Yck 1.77 1.79 1.80 1.81 1.80 1.76

absolute soil humidity W% 5.64 6.58 8.87 10.30 12.52 13.50

Maximum density 1.81 g/cm3

Bulk density in natural state. 1.54 g/cm3

Optimal humidity 10.3 2. Grain composition according to GOST 8735-88

3. Determination of the maximum density and optimal moisture content of sand.

Results of laboratory tests according to GOST 22733-2002

Graph of soil density versus moisture content

Sand data sheet

1. Qualitative characteristics according to GOST 8736-2014

optimal sand moisture content, sand filtration coefficient, m/day

Size module

total residue on the sieve 0.63, the presence of grains larger than 5 mm, the presence of grains larger than 10 mm, Construction sand

sand group according to GOST 8736-2014 clause 4.3.2 tab No. 1 Very fine, class 2

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RUR99

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Be2Me bottle with silicone nipple from birth 250 ml blue. The feeding bottle in combination with a silicone milk nipple (size S, low flow) is intended for feeding your baby from 0 months. Equipped with a convex precise scale with a convenient step of 30 ml. Use and Care: Before use, boil in open container no more than 3 minutes. After feeding, rinse products warm water with soap and rinse thoroughly. The bottle is suitable for heating baby food V microwave oven or heater. Warm the bottle in the microwave for no more than 1 minute. and only in open form, without nipple, ring and cap.

RUR3426

Model:

1. A. Altaev. Memorable meetings Altaev A. 2. A. N. Ostrovsky in the memoirs of contemporaries 3. A. P. Chekhov in the memoirs of contemporaries 4. A. Ya. Panaeva (Golovacheva). Memoirs of Panaev A. 5. V. G. Belinsky in the memoirs of contemporaries 6. V. G. Korolenko in the memoirs of contemporaries 7. V. Mayakovsky in the memoirs of contemporaries 8. Near Tolstoy Goldenweiser A. 9. Herzen in the memoirs of contemporaries 10. Gogol in memoirs contemporaries 11. D. V. Grigorovich D. V. Literary memoirs Grigorovich D. 12. I. I. Panaev. Literary memoirs Panaev I. 13. I. I. Pushchin. Notes about Pushkin. Letters from Pushchin I. 14. From distant years Passek T.P. 15. L.N. Tolstoy in the memoirs of his contemporaries (set of 2 books) 16. L.N. Tolstoy in Last year his life Bulgakov N. 17. L. F. Panteleev. Memoirs of Panteleev L.F. 18. M. Gorky in the memoirs of his contemporaries 19. M. Gorky. Literary portraits Gorky M. 20. M. K. Kuprina-Iordanskaya. Years of youth Kuprin-Iordanskaya M. 21. M. Yu. Lermontov in the memoirs of his contemporaries 22. N. A. Tuchkova-Ogareva. Memoirs of Tuchkov-Ogarev N. A. 23. N. V. Shelgunov, L. P. Shelgunova, M. L. Mikhailov. Memoirs (set of 2 books) 24. N. N. Zlatovratsky. Memoirs Zlatovratsky N. 25. Nikitenko A. V. Diary (set of 3 books) Nikitenko A. 26. Essays on the Past Tolstoy S. L. 27. P. V. Annenkov. Literary memoirs Annenkov P. 28. P. D. Boborykin. Memoirs (set of 2 books) Boborykin P. 29. T. G. Shevchenko in the memoirs of contemporaries 30. F. M. Dostoevsky in the memoirs of contemporaries (set of 2 books)

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Model: Hasbro

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GOST 8736-93

INTERSTATE STANDARD

SAND FOR CONSTRUCTION WORK

TECHNICAL CONDITIONS

INTERSTATE SCIENTIFIC AND TECHNICAL COMMISSION
ON STANDARDIZATION AND TECHNICAL REGULATION
IN CONSTRUCTION (MNTKS)

Preface

1 DEVELOPED by the VNIPIIstromsyrye Institute with the participation of SoyuzDorNII, NIIZhB, TsNIIOMTP of the Russian Federation

INTRODUCED by the Ministry of Construction of Russia

2 ADOPTED by the Interstate Scientific and Technical Commission for Standardization and Technical Regulation in Construction (INTKS) on November 10, 1993.

State name	Name of the state construction management body
The Republic of Azerbaijan	State Construction Committee of the Azerbaijan Republic
Republic of Armenia	State Architecture of the Republic of Armenia
Republic of Belarus	Gosstroy of the Republic of Belarus
The Republic of Kazakhstan	Ministry of Construction of the Republic of Kazakhstan
Republic of Kyrgyzstan	Gosstroy of the Kyrgyz Republic
The Republic of Moldova	Ministry of Architecture and Construction of the Republic of Moldova
Russian Federation	Gosstroy of Russia
The Republic of Tajikistan	State Construction Committee of the Republic of Tajikistan
The Republic of Uzbekistan	State Committee for Architecture and Construction of the Republic of Uzbekistan

3 ENTERED INTO EFFECT on July 1, 1995 as a state standard of the Russian Federation by Resolution of the Ministry of Construction of Russia dated November 28, 1994 No. 18-29

4 INSTEAD GOST 8736-85, GOST 26193-84

INTERSTATE STANDARD

SAND FOR CONSTRUCTION WORK

Technicalconditions

Sand for construction works.
Specifications

Date of introduction 1995-07-01

1 AREA OF USE

The requirements of this standard do not apply to graded and crushed sands.

The requirements of this standard, set out in paragraphs , , , , sections and , are mandatory.

2 REGULATORY REFERENCES

This standard uses references to the following standards.

Crushed stone and gravel from dense rocks and industrial waste for construction work. Methods of physical and mechanical tests

Sand for construction work. Test methods.

Construction materials and products. Determination of specific effective activity of natural radionuclides

(Changed edition. Amendment No. 2).

3 DEFINITIONS

The following terms are used in this standard.

Natural sand- inorganic bulk material with a grain size of up to 5 mm, formed as a result of the natural destruction of rocks and obtained during the development of sand and sand-gravel deposits without or with the use of special processing equipment.

(Changed edition. Amendment No. 1).

Crushed sand- sand with a grain size of up to 5 mm, made from rocks and gravel using special crushing and grinding equipment.

Fractionated sand - sand divided into two or more fractions using special equipment.

Sand from crushing screenings - inorganic bulk material with a grain size of up to 5 mm, obtained from rock crushing screenings during the production of crushed stone and from waste from the enrichment of ferrous and non-ferrous ores and non-metallic minerals and other industries.

4 TECHNICAL REQUIREMENTS

4.1 Sand must be manufactured in accordance with the requirements of this standard according to technological documentation approved by the manufacturer.

4.2 Sand, depending on the values of standardized quality indicators (grain composition, content of dust and clay particles), is divided into two classes.

4.3 Main parameters and dimensions

4.3.1 Depending on the grain composition, sand is divided into groups according to size:

I class - very coarse (sand from crushing screenings), increased size, large, medium and small;

Class II - very coarse (sand from crushing screenings), increased coarseness, coarse, medium, fine, very fine, fine and very fine.

4.3.2 Each group of sand is characterized by the value of the particle size modulus indicated in the table.

Table 1

	Size module Mk
Very large	St.3.5
Increased size	»3.0 to 3.5
Large	"2.5"3.0
Average	"2.0"2.5
Small	"1.5"2.0
Very small	"1.0"1.5
Thin	"0.7"1.0
Very thin	Up to 0.7

4.3.3 The total remaining sand on the sieve with mesh No. 063 must correspond to the values indicated in the table.

table 2

Percentage by weight

	Full residue on sieve No. 063
Very large	St.75
Increased size	»65 to 75
Large	"45"65
Average	"30"45
Small	"10"30
Very small	To 10
Thin	Not standardized
Very thin	»»
Note - By agreement between the manufacturer and the consumer, in class II sand, deviation of the total residue on sieve No. 063 from the above is allowed, but not more than ±5%.

4.3.4 Content of grains of coarseness. 10.5 and less than 0.16 mm should not exceed the values specified in the table.

Table 3

Percentage by weight, no more


	St. 10 mm	St. 5 mm	Less than 0.15mm
I class

Small
II class
Extra large and extra fine
Large and medium
Small and very small
Thin and very thin	Not allowed		Not standardized

4.4Characteristics

in natural sand

in sand from crushing screenings

in natural sand

in sand from crushing screenings

I class

Very large

0,35

Increased size. large and medium

0,25

0,35

Small

0,35

0,50

II class

Very large

Extra fine, large and medium

Small and very small

Thin and very thin

Not standardized

0,1*

Note - In very fine natural sand of class II, in agreement with the consumer, the content of dust and clay particles up to 7% by weight is allowed.

* For sands obtained during the enrichment of ores of ferrous and non-ferrous metals and non-metallic minerals from other industries.

The grade of sand from crushing screenings must correspond in strength to that indicated in the table.

Table 5

	Ultimate compressive strength of rock in a water-saturated state, MPa, not less	Gravel grade according to crushability in the cylinder
1400
1200
1000		Dr8
		Dr12
		Dr16
		Dr24
Note - It is allowed, by agreement between the manufacturer and the consumer, to supply sandII from sedimentary rocks with a compressive strength of less than 40 MPa, but not less than 20 MPa.

The durability of sand is determined by its mineralogical and petrographic composition and the content of harmful components and impurities. The list of rocks and minerals classified as harmful components and impurities, and their maximum permissible contents, is given in the Appendix.

4.4.4 Sand from rock crushing screenings, having a true grain density of more than 2.8 g/cm 3 or containing grains of rocks and minerals classified as harmful components in an amount exceeding their permissible content, or containing several different harmful components, is released for specific types of construction work according to technical documents developed in accordance with the established procedure and agreed upon with laboratories specialized in the field of corrosion.

4.4.6 The manufacturer must inform the consumer of the following characteristics established by geological exploration:

Mineralogical and petrographic composition indicating rocks and minerals classified as harmful components and impurities;

Emptiness;

The true density of sand grains.

At A eff up to 370 Bq/kg - in newly constructed residential and public buildings;

At A eff St. 740 to 1500 Bq/kg - in road construction and stumps of populated areas.

If necessary, in national standards in force on the territory of the state, the value of the specific effective activity of natural radionuclides can be changed within the limits specified above.

(Changed edition. Amendment No. 1, 2).

4.4.9 Sand should not contain foreign contaminants.

5 ACCEPTANCE RULES

5.1 Sand must be accepted by the technical control service of the manufacturer.

5.2 To verify compliance of sand quality with the requirements of this standard, acceptance and periodic tests are carried out.

5.3 Acceptance tests at the manufacturer are carried out daily by testing one replacement sample taken from each production line.

During acceptance control the following is determined:

Grain composition;

Once a quarter - bulk density (bulk density at humidity during shipment is determined as necessary), as well as the presence of organic impurities (humic substances) in natural sand;

In the absence of geological survey data on the radiation-hygienic assessment of the deposit and a conclusion on the class of sand, the manufacturer carries out a radiation-hygienic assessment of the mined rock sections using the express method directly at the mine face or in finished product warehouses (alluvium map) in accordance with the requirements.

5.5 Selection and preparation of sand samples for quality control at the manufacturer is carried out in accordance with the requirements.

Batch sizeNumber of spot samples

Up to 350 m................................................... ...................................10

St. 350 to 700 m............................................ ..........................15

St. 700 m................................................... ....................................10

From the spot samples, a combined sample is formed that characterizes the controlled batch. Averaging, reduction and sample preparation are carried out according to.

Cars are selected according to the instructions of the consumer. If the batch consists of one wagon, five spot samples are taken during unloading, from which a combined sample is obtained.

For control testing of sand unloaded from ships and placed on alluvial maps using hydromechanization, spot samples are taken in accordance with 2.9.

If belt conveyors are used for unloading sand, point samples are taken from the flow of sand on the conveyors. When unloading each vehicle, one spot sample is taken. The number of cars is determined taking into account the receipt of the required number of point samples according to. Cars are selected according to the consumer's instructions.

If the lot consists of less than ten cars, sand samples are taken from each car.

5.12 The quantity of sand supplied is determined by volume or weight. Sand measurements are carried out in wagons, ships or cars.

Sand shipped in wagons or cars is weighed on truck scales. The mass of sand shipped in ships is determined by the vessel's draft.

5.13 The manufacturer is obliged to accompany each batch of supplied sand with a document on its quality in the established form, which must indicate:

Name of the manufacturer and its address; GOST 8735.

6.2 The specific effective activity of natural radionuclides in sand is determined by.

7 TRANSPORTATION AND STORAGE

When transporting sand by rail, compliance with the requirements of the Technical Conditions for Loading and Securing Cargo, approved by the Ministry of Railways, must also be ensured.

7.2 When shipping and storing sand in winter, the manufacturer must take measures to prevent freezing (shovelling, treatment with special solutions, etc.).

APPENDIX A

(required)

The permissible content of rocks and minerals classified as harmful components and impurities in sand used as a filler for concrete and mortars should not exceed the following values:

Amorphous varieties of silicon dioxide, soluble in alkalis (chalcedony, opal, flint, etc.) - no more than 50 mmol/l;

Sulfur, sulfides, except pyrite (marcasite, pyrrhotite, etc.) and sulfates (gypsum, anhydrite, etc.) in terms of SO 3 - no more than 1.0%, pyrite in terms of SO 3 - no more than 4% by weight;

Mica - no more than 2% by weight:

Halide compounds (halite, sylvite, etc.), including water-soluble chlorides, in terms of chlorine ion - no more than 0.15% by weight;

Coal - no more than 1% by weight;

Organic impurities (humic acids) - less than the amount that gives the sodium hydroxide solution (colorimetric test) a color corresponding to the color of the standard or darker than this color. The use of sand that does not meet this requirement is permitted only after positive results have been obtained from tests of sand in concrete or mortar for durability characteristics.

The permissible content of zeolite, graphite, and oil shale is established based on studies of the effect of sand on the durability of concrete or mortar.

APPENDIX B

(informational)

(Excluded. Amendment No. 2).

Keywords:natural sand, construction work, sand from crushed screenings, fractionated sand, crushed sand, grain composition

SAND FOR CONSTRUCTION WORK

2**

1 area of ​​use

2 Normative references

3 Definitions

4 Technical requirements

5 Acceptance rules

6 Control methods

7 Transportation and storage

APPENDIX A (mandatory). Content of harmful impurities

INTERSTATE STANDARD

1 AREA OF USE

2 REGULATORY REFERENCES

5 ACCEPTANCE RULES

6 CONTROL METHODS

7 TRANSPORTATION AND STORAGE

APPENDIX A (required) CONTENT OF HARMFUL IMPURITIES

APPENDIX B (Deleted. Amendment No. 2).

1 AREA OF USE

2 REGULATORY REFERENCES

3 DEFINITIONS

4 TECHNICAL REQUIREMENTS

5 ACCEPTANCE RULES

7 TRANSPORTATION AND STORAGE

APPENDIX A

APPENDIX B

1 area of use

APPENDIX A
(required)
CONTENT OF HARMFUL IMPURITIES