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GOST 23735 79 sand-gravel mixtures for construction work. Sand-gravel mixtures for construction work. State Construction Committee of the USSR

STATE STANDARD OF THE USSR UNION

SAND-GRAVEL MIXTURES
FOR CONSTRUCTION WORK

TECHNICAL CONDITIONS

GOST 23735-79

STATE CONSTRUCTION COMMITTEE OF THE USSR

STATE STANDARD OF THE USSR UNION

By Decree of the USSR State Committee for Construction Affairs dated June 22, 1979 No. 92, the introduction date was established

from 01.07.80

Failure to comply with the standard is punishable by law

This standard applies to natural and enriched sand and gravel mixtures used:

natural - for the construction of road surfaces, the top layer of bases for coatings, for drainage layers and for other purposes in road construction in accordance with the requirements of the rules and regulations for the construction of highways;

enriched (obtained from natural sand and gravel mixtures by enrichment) - in accordance with the requirements of building codes and regulations for the relevant types of construction work.

The standard does not apply to natural sand and gravel mixtures used as a semi-finished product for subsequent processing by consumers.

1. TECHNICAL REQUIREMENTS

1.1. Sand-gravel mixtures are characterized by:

the largest grain size of gravel;

indicators adopted for evaluating gravel according to GOST 8267-93 (grain composition, strength, grain content of weak rocks, frost resistance, content of dust, clay and silty particles, clay in lumps and mineralogical and petrographic composition);

indicators adopted for assessing sand according to GOST 8736-93 (grain composition and fineness modulus, content of dust, clay and silt particles, including clay in lumps, content of organic impurities and mineralogical and petrographic composition).

1.2. In a natural sand-gravel mixture, the content of gravel grains larger than 5 mm should be no less than 10% and no more than 95% by weight.

1.3. The enriched sand-gravel mixture, depending on the content of gravel grains, is divided into five groups:

from 15 to 25%

St. 25 » 35%

Supply of enriched sand-gravel-crushed stone mixture is allowed. In this case, crushed stone is included in the gravel component of the sand-gravel mixture.

1.4. The largest grain size of gravel ( D max) in a natural sand-gravel mixture should be at least 10 mm and no more than 70 mm.

1.5. The enriched sand-gravel mixture should have gravel grains of the largest coarseness ( D mostb) one of the following values: 10; 20; 40 or 70 mm.

1.6. By agreement of the parties, it is possible to supply a sand and gravel mixture with gravel grains with a particle size of over 70 mm, but not more than 150 mm.

1.7. The grain composition of gravel included in the natural sand-gravel mixture must meet the requirements specified in table. .

Table 1

1.8. The grain composition of gravel included in the enriched sand-gravel mixture must meet the requirements specified in table. .

table 2

1.9. The strength of gravel included in the natural and enriched sand-gravel mixture, the content of weak rock grains in it and frost resistance must meet the requirements of GOST 8267-93.

(Changed edition. Amendment No. 1).

1.10. The sands included in the natural sand-gravel mixture in terms of grain composition must meet the requirements of GOST 8736-93 for coarse, medium, fine and very fine sands.

The sands included in the enriched sand-gravel mixture must meet the grain composition requirements of GOST 8736-93 for coarse, medium and fine sands. The content of particles passing through a sieve with mesh No. 014 in sands that are part of a natural sand-gravel mixture should not exceed 20%, and enriched - 10% by weight.

(Changed edition. Amendment No. 1).

1.12. Sand and gravel mixtures should not contain clogging inclusions.

1.13. Natural and enriched sand and gravel mixtures, depending on the value of the total specific effective activity of natural radionuclides Aeff, are used:

for the production of materials, products and structures used for the construction and reconstruction of residential and public buildings with Aeff up to 370 Bq/kg;

for the production of materials, products and structures used for the construction of industrial buildings and structures, as well as the construction of roads within the territories of settlements and areas of prospective development with Aeff over 370 Bq/kg to 740 Bq/kg;

for the production of building materials for the construction of roads and airfields outside populated areas with Aeff over 740 Bq/kg to 1500 Bq/kg.

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. ACCEPTANCE RULES

2.1. The sand-gravel mixture produced by the manufacturing enterprise (quarry) must be accepted by the technical control department of this enterprise.

2.2. Acceptance and delivery of sand and gravel mixture is carried out in batches. A batch is considered to be the amount of sand and gravel mixture simultaneously shipped to one consumer in one train or one barge.

When shipping by road, a batch is considered to be the amount of mixture shipped to one consumer within one day.

2.3. The quantity of the supplied mixture is determined by volume or weight. The mixture is measured in wagons, ships, and cars.

2.4. Weighing the mixture shipped in wagons or automobiles is carried out on railway or automobile scales. The mass of the mixture shipped in ships is determined by the vessel's draft.

2.5. Conversion of the quantity of the mixture from units of mass to units of volume or vice versa is carried out according to the values of the volumetric bulk mass of the mixture in a state of natural humidity. The moisture content of the supplied mixture is established by agreement of the parties, taking into account the conditions of its extraction, experience in operating the quarry, geological exploration data and the time of year.

2.6. Determination of the grain composition of the mixture, the content of dust, clay and silt particles, including clay in lumps, is carried out daily.

2.7. Determination of the strength of gravel and the volumetric bulk mass of the mixture is carried out once a quarter, frost resistance, the total specific effective activity of natural radionuclides of gravel - once a year.

(Changed edition. Amendment No. 1).

2.8. Sampling of the mixture for testing is carried out in accordance with GOST 8269.0-97. The sample size is the same as for unfractionated gravel.

(Changed edition. Amendment No. 1).

2.9. When checking the compliance of the sand-gravel mixture with the requirements of this standard, the consumer must use the sampling procedure given below.

If the test results of one sample are unsatisfactory, a second sample is tested. If the test results of the second sample are unsatisfactory, the batch is not subject to acceptance. If the test results of the second sample are satisfactory, a third sample is tested, the test results of which are final.

Note. It is allowed to carry out a quality control check of the mixture per carload.

2.11. To control the quality of the mixture in a batch shipped by water transport, one sample is taken from each part of the batch with a volume of no more than 500 tons (350 m3). Sampling is carried out when unloading and loading the vessel from conveyor belts or other types of loading and unloading equipment.

The quality of the mixture is determined by the arithmetic average of the test results of all samples.

2.13. The mass of samples taken for control testing of a batch of railway cars, ships or cars in accordance with the requirements of paragraphs. - must be at least 5 times the total mass of samples for testing in accordance with GOST 8269.0-97. Samples are reduced to the required size using the quartering method or using grooved dividers.

(Changed edition. Amendment No. 1).

3. TEST METHODS

3.1. Testing of gravel and sand included in the sand-gravel mixture for all indicators, except grain composition, is carried out separately according to GOST 8269.0-97 and GOST 8735-88.

To prepare the mixture for testing, it is divided into gravel and sand, while ensuring the maximum content of gravel in sand and sand in gravel, established respectively by GOST 8736-93 and GOST 8267-93.

(Changed edition. Amendment No. 1).

3.2. Determination of the grain composition of the mixture is carried out in the same manner as the determination according to GOST 8269.0-97 of the grain composition of unfractionated gravel, by sieving on sieves after preliminary drying of the entire sample to constant weight. In this case, the standard set of sieves additionally includes the following sieves: a sieve with round holes with a diameter of 2.5 mm and a mesh of 1.25; 0.63 and 0.315. Partial residues on sieves are calculated as a percentage of the initial mass of the sifted sample, including the amount of material that passed through a sieve with holes measuring 0.14 mm.

(Changed edition. Amendment No. 1).

3.4. The total specific effective activity of natural radionuclides is determined by the gamma spectrometric method according to GOST 30108-94.

(Introduced additionally. Amendment No. 1).

4. MARKING, TRANSPORTATION AND STORAGE

4.1. The manufacturing enterprise (quarry) is obliged to accompany each batch of the supplied mixture with a document of the established form, which must indicate:

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

date of preparation of the document and its number;

name and address of the consumer;

batch number and quantity of sand and gravel mixture;

wagon numbers or vessel number and invoice numbers;

type of sand and gravel mixture (natural or enriched);

largest gravel size;

grain composition of gravel;

gravel grade by strength;

frost resistance of gravel;

sand fineness module, residue on sieve No. 063 and passage through sieve No. 014;

designation of this standard;

total specific effective activity of natural radionuclides.

(Changed edition. Amendment No. 1).

4.2. The manufacturer (quarry) must inform the consumer, upon request, of the following characteristics of gravel: a description of the mineralogical and petrographic composition, a description of the shape and surface condition of the grains included in the mixture, as determined during geological exploration.

4.3. The manufacturing enterprise (quarry) must inform the consumer, upon request, of the characteristics of the sand included in the mixture, established during geological exploration, including a description of the mineralogical and petrographic composition, a description of the shape and nature of the surface of the grains, its density, voids, specific surface area, index potential reactivity (if there are reactive minerals in the sand).

4.4. Sand and gravel mixtures are transported and stored under conditions that protect them from clogging and contamination.

5. SUPPLIER WARRANTY

5.1. The manufacturing enterprise (quarry) must guarantee compliance of the sand and gravel mixture with the requirements of this standard.

GOST 23735-79

Group Zh17

STATE STANDARD OF THE USSR UNION

SAND-GRAVEL MIXTURES FOR CONSTRUCTION WORK

Specifications

Sandy-gravel mixtures for construction work.

Specifications

OKP 57 1130

Date of introduction 1980-07-01

ENTERED INTO EFFECT by Resolution of the USSR State Committee for Construction Affairs dated June 22, 1979 N 92

REISSUE

AMENDED Change No. 1, adopted by the Interstate Scientific and Technical Commission for Standardization, Technical Standards and Certification in Construction (MNTKS) on May 17, 2000, adopted and put into effect by Resolution of the State Construction Committee of Russia N 115 of 12/04/2000 from 04/01/2001 (BLS N 2, 2001).

Change No. 1 was made by the legal bureau "Code" according to the text of the newsletter.

This standard applies to natural and enriched sand and gravel mixtures used:

enriched (obtained from natural sand and gravel mixtures by enrichment) - in accordance with the requirements of building codes and regulations for the relevant types of construction work.

The standard does not apply to natural sand and gravel mixtures used as a semi-finished product for subsequent processing by consumers.

1. TECHNICAL REQUIREMENTS

1.1. Sand-gravel mixtures are characterized by:

the content of gravel and sand in the mixture;

the largest grain size of gravel;

1.2. In a natural sand-gravel mixture, the content of gravel grains larger than 5 mm should be no less than 10% and no more than 95% by weight.

1.3. The enriched sand-gravel mixture, depending on the content of gravel grains, is divided into five groups:

from 15 to 25%

St. 25" 35%

" 35 " 50%

" 50 " 65%

" 65 " 75%

Supply of enriched sand-gravel-crushed stone mixture is allowed. In this case, crushed stone is included in the gravel component of the sand-gravel mixture.

1.4. The largest grain size of gravel () in a natural sand-gravel mixture should be no less than 10 mm and no more than 70 mm.

1.5. The enriched sand-gravel mixture must have gravel grains of the largest size () one of the following values: 10; 20; 40 or 70 mm.

1.6. By agreement of the parties, it is possible to supply a sand and gravel mixture with gravel grains with a particle size of over 70 mm, but not more than 150 mm.

1.7. The grain composition of gravel included in the natural sand-gravel mixture must meet the requirements specified in Table 1.

Table 1


Test sieves size, mm
	0-15

1.8. The grain composition of gravel included in the enriched sand-gravel mixture must meet the requirements specified in Table 2.

table 2


Test sieves size, mm	0,5( + )		1,25
Total residue on sieves by weight, %	40-80	0-10

1.9. The strength of gravel included in the natural and enriched sand-gravel mixture, the content of weak rock grains in it and frost resistance must meet the requirements of GOST 8267-93.

(Changed edition, Amendment No. 1).

1.10. The sands included in the natural sand-gravel mixture in terms of grain composition must meet the requirements of GOST 8736-93 for coarse, medium, fine and very fine sands.

(Changed edition, Amendment No. 1).

1.11. The content of dust and clay particles in a natural sand-gravel mixture should not exceed 5%, including 1% clay in lumps, and 3% and 0.5% by weight in an enriched mixture, respectively.

1.12. Sand and gravel mixtures should not contain clogging inclusions.

1.13. Natural and enriched sand-gravel mixtures, depending on the value of the total specific effective activity of natural radionuclides A, are used:

for the production of materials, products and structures used for the construction and reconstruction of residential and public buildings at A up to 370 Bq/kg;

for the production of materials, products and structures used for the construction of industrial buildings and structures, as well as the construction of roads within the territory of settlements and areas of prospective development at A above 370 Bq/kg to 740 Bq/kg;

for the production of building materials for the construction of roads and airfields outside populated areas at A above 740 Bq/kg to 1500 Bq/kg."

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. ACCEPTANCE RULES

2.1. The sand-gravel mixture produced by the manufacturing enterprise (quarry) must be accepted by the technical control department of this enterprise.

When shipping by road, a batch is considered to be the amount of mixture shipped to one consumer within one day.

2.3. The quantity of the supplied mixture is determined by volume or mass. The mixture is measured in wagons, ships, and cars.

2.4. Weighing the mixture shipped in wagons or automobiles is carried out on railway or automobile scales. The mass of the mixture shipped in ships is determined by the vessel's draft.

2.6. Determination of the grain composition of the mixture, the content of dust, clay and silt particles, including clay in lumps, is carried out daily.

(Changed edition, Amendment No. 1).

2.8. Sampling of the mixture for testing is carried out in accordance with GOST 8269.0-97. The sample size is the same as for unfractionated gravel.

(Changed edition, Amendment No. 1).

2.9. When checking the compliance of the sand-gravel mixture with the requirements of this standard, the consumer must use the sampling procedure given below.

2.10. To control the quality of the mixture in a batch shipped by rail, samples are taken for a batch size of up to 3 wagons - from each wagon, for a larger batch size - from 3 wagons as directed by the consumer. Each sample is taken during loading or unloading of the mixture from at least five places in the car at different depths. Samples taken from different cars are not mixed and tested separately. If the test results of one sample are positive, the remaining samples are not tested.

Note. It is allowed to carry out a quality control check of the mixture per carload.

2.11. To control the quality of the mixture in a batch shipped by water transport, one sample is taken from each part of the batch with a volume of no more than 500 tons (350 m). Sampling is carried out when unloading and loading the vessel from conveyor belts or other types of loading and unloading equipment.

The quality of the mixture is determined by the arithmetic average of the test results of all samples.

2.12. To control the quality of the mixture shipped by road, one sample is taken from each part of the batch weighing no more than 500 tons (350 m). Each sample is taken from at least 5 cars.

2.13. The mass of samples taken for control testing of a batch of railway cars, ships or cars in accordance with the requirements of paragraphs. 2.10-2.12, must be at least 5 times the total mass of samples for testing in accordance with GOST 8269.0-97. Samples are reduced to the required size using the quartering method or using grooved dividers.

(Changed edition, Amendment No. 1).

3. TEST METHODS

3.1. Testing of gravel and sand included in the sand-gravel mixture for all indicators, except grain composition, is carried out separately according to GOST 8269.0-97 and GOST 8735-88.

(Changed edition, Amendment No. 1).

3.3. The content of dust and clay particles in the mixture, including clay in lumps and the total specific effective activity of natural radionuclides, is determined as a weighted average of the results of determining their content in gravel and sand.

(Changed edition, Amendment No. 1).

3.4 The total specific effective activity of natural radionuclides is determined by the gamma spectrometric method according to GOST 30108-94.

(Introduced additionally. Amendment No. 1).

4. MARKING, TRANSPORTATION AND STORAGE

4.1. The manufacturing enterprise (quarry) is obliged to accompany each batch of the supplied mixture with a document of the established form, which must indicate:

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

date of preparation of the document and its number;

name and address of the consumer;

batch number and quantity of sand and gravel mixture;

wagon numbers or vessel number and invoice numbers;

type of sand and gravel mixture (natural or enriched);

gravel content in the mixture;

largest gravel size;

the content of dust, clay and silt particles in the mixture, including clay in lumps;

grain composition of gravel;

gravel grade by strength;

content of soft rock grains in gravel;

frost resistance of gravel;

sand fineness module, residue on sieve No. 063 and passage through sieve No. 0.14;

designation of this standard;

total specific effective activity of natural radionuclides.

(Changed edition, Amendment No. 1).

4.4. Sand and gravel mixtures are transported and stored under conditions that protect them from clogging and contamination.

5. SUPPLIER WARRANTY

5.1. The manufacturing enterprise (quarry) must guarantee compliance of the sand and gravel mixture with the requirements of this standard.

The text of the document is verified according to:

official publication

“The aggregates are porous and dense.”

Sat. GOSTs of the USSR Union -

M.: Standards Publishing House, 1994

Legal Bureau "Code" in

text of the document is amended by Amendment No. 1,

accepted by MNTKS 05/17/2000

All documents presented in the catalog are not their official publication and are intended for informational purposes only. Electronic copies of these documents can be distributed without any restrictions. You can post information from this site on any other site.

STATE STANDARD OF THE USSR UNION

SAND-GRAVEL MIXTURES
FOR CONSTRUCTION WORK

TECHNICAL CONDITIONS

GOST 23735-79

STATE CONSTRUCTION COMMITTEE OF THE USSR

STATE STANDARD OF THE USSR UNION

By Decree of the USSR State Committee for Construction Affairs dated June 22, 1979 No. 92, the introduction date was established

from 01.07.80

Failure to comply with the standard is punishable by law

This standard applies to natural and enriched sand and gravel mixtures used:

enriched (obtained from natural sand and gravel mixtures by enrichment) - in accordance with the requirements of building codes and regulations for the relevant types of construction work.

The standard does not apply to natural sand and gravel mixtures used as a semi-finished product for subsequent processing by consumers.

1. TECHNICAL REQUIREMENTS

1.1. Sand-gravel mixtures are characterized by:

the largest grain size of gravel;

1.2. In a natural sand-gravel mixture, the content of gravel grains larger than 5 mm should be no less than 10% and no more than 95% by weight.

1.3. The enriched sand-gravel mixture, depending on the content of gravel grains, is divided into five groups:

from 15 to 25%

St. 25 » 35%

» 35 » 50%

» 50 » 65%

» 65 » 75%

Supply of enriched sand-gravel-crushed stone mixture is allowed. In this case, crushed stone is included in the gravel component of the sand-gravel mixture.

1.4. The largest grain size of gravel (D naib ) in a natural sand and gravel mixture should be at least 10 mm and no more than 70 mm.

1.5. The enriched sand-gravel mixture should have gravel grains of the largest coarseness (D naib ) one of the following values: 10; 20; 40 or 70 mm.

1.6. By agreement of the parties, it is possible to supply a sand and gravel mixture with gravel grains with a particle size of over 70 mm, but not more than 150 mm.

1.7. The grain composition of gravel included in the natural sand-gravel mixture must meet the requirements specified in table. .

Table 1

1.8. The grain composition of gravel included in the enriched sand-gravel mixture must meet the requirements specified in table. .

table 2

1.9. The strength of gravel included in the natural and enriched sand-gravel mixture, the content of weak rock grains in it and frost resistance must meet the requirements of GOST 8267-93.

(Changed edition. Amendment No. 1).

1.10. The sands included in the natural sand-gravel mixture in terms of grain composition must meet the requirements of GOST 8736-93 for coarse, medium, fine and very fine sands.

(Changed edition. Amendment No. 1).

1.11. The content of dust and clay particles in a natural sand-gravel mixture should not exceed 5%, including 1% clay in lumps, and 3% and 0.5% by weight, respectively, in an enriched mixture.

1.12. Sand and gravel mixtures should not contain clogging inclusions.

1.13. Natural and enriched sand-gravel mixtures, depending on the value of the total specific effective activity of natural radionuclides A eff, are used:

for the production of materials, products and structures used for the construction and reconstruction of residential and public buildings with A eff up to 370 Bq/kg;

for the production of building materials for the construction of roads and airfields outside populated areas with A eff above 740 Bq/kg to 1500 Bq/kg.

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. ACCEPTANCE RULES

2.1. The sand-gravel mixture produced by the manufacturing enterprise (quarry) must be accepted by the technical control department of this enterprise.

When shipping by road, a batch is considered to be the amount of mixture shipped to one consumer within one day.

2.3. The quantity of the supplied mixture is determined by volume or weight. The mixture is measured in wagons, ships, and cars.

2.4. Weighing the mixture shipped in wagons or automobiles is carried out on railway or automobile scales. The mass of the mixture shipped in ships is determined by the vessel's draft.

2.6. Determination of the grain composition of the mixture, the content of dust, clay and silt particles, including clay in lumps, is carried out daily.

(Changed edition. Amendment No. 1).

2.8. Sampling of the mixture for testing is carried out in accordance with GOST 8269.0-97. The sample size is the same as for unfractionated gravel.

(Changed edition. Amendment No. 1).

2.9. When checking the compliance of the sand-gravel mixture with the requirements of this standard, the consumer must use the sampling procedure given below.

Note. It is allowed to carry out a quality control check of the mixture per carload.

The quality of the mixture is determined by the arithmetic average of the test results of all samples.

2.13. The mass of samples taken for control testing of a batch of railway cars, ships or cars in accordance with the requirements of paragraphs. -, must be at least 5 times the total mass of samples for testing in accordance with GOST 8269.0-97. Samples are reduced to the required size using the quartering method or using grooved dividers.

(Changed edition. Amendment No. 1).

3. TEST METHODS

3.1. Testing of gravel and sand included in the sand-gravel mixture for all indicators, except grain composition, is carried out separately according to GOST 8269.0-97 and GOST 8735-88.

(Changed edition. Amendment No. 1).

3.4. The total specific effective activity of natural radionuclides is determined by the gamma spectrometric method according to GOST 30108-94.

(Introduced additionally. Amendment No. 1).

4. MARKING, TRANSPORTATION AND STORAGE

4.1. The manufacturing enterprise (quarry) is obliged to accompany each batch of the supplied mixture with a document of the established form, which must indicate:

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

date of preparation of the document and its number;

name and address of the consumer;

batch number and quantity of sand and gravel mixture;

wagon numbers or vessel number and invoice numbers;

type of sand and gravel mixture (natural or enriched);

largest gravel size;

grain composition of gravel;

gravel grade by strength;

frost resistance of gravel;

sand fineness module, residue on sieve No. 063 and passage through sieve No. 014;

designation of this standard;

total specific effective activity of natural radionuclides.

(Changed edition. Amendment No. 1).

4.4. Sand and gravel mixtures are transported and stored under conditions that protect them from clogging and contamination.

5. SUPPLIER WARRANTY

5.1. The manufacturing enterprise (quarry) must guarantee compliance of the sand and gravel mixture with the requirements of this standard.

GOST 23735-79

INTERSTATE STANDARD

SAND-GRAVEL MIXTURES
FOR CONSTRUCTION WORK

TECHNICAL CONDITIONS

IPC PUBLISHING HOUSE OF STANDARDS
Moscow

INTERSTATE STANDARD

Date of introduction 01.07.80

This standard applies to natural and enriched sand and gravel mixtures used:

Natural - for the construction of road surfaces, the top layer of bases for coatings, for drainage layers and for other purposes in road construction in accordance with the requirements of the rules and regulations for the construction of highways;

Enriched (obtained from natural sand and gravel mixtures by enrichment) - in accordance with the requirements of building codes and regulations for the relevant types of construction work.

The standard does not apply to natural sand and gravel mixtures used as a semi-finished product for subsequent processing by consumers.

1. TECHNICAL REQUIREMENTS

1.1. Sand-gravel mixtures are characterized by:

The largest grain size of gravel;

Indicators adopted for evaluating gravel according to GOST 8267 (grain composition, strength, grain content of weak rocks, frost resistance, content of dust, clay and silt particles, clay in lumps and mineralogical and petrographic composition);

Indicators adopted for assessing sand according to GOST 8736 (grain composition and fineness modulus, content of dust, clay and silt particles, including clay in lumps, content of organic impurities and mineralogical and petrographic composition).

1.2. In a natural sand-gravel mixture, the content of gravel grains larger than 5 mm should be no less than 10% and no more than 95% by weight.

1.3. The enriched sand-gravel mixture, depending on the content of gravel grains, is divided into five groups:

From 15 to 25%

St. 25 » 35%

» 35 » 50%

» 50 » 65%

» 65 » 75%

Supply of enriched sand-gravel-crushed stone mixture is allowed. In this case, crushed stone is included in the gravel component of the sand-gravel mixture.

1.4. The largest grain size of gravel (D naib ) in a natural sand and gravel mixture should be at least 10 mm and no more than 70 mm.

1.5. The enriched sand-gravel mixture should have gravel grains of the largest coarseness (D naib ) one of the following values: 10; 20; 40 or 70 mm.

1.6. By agreement of the parties, it is possible to supply a sand and gravel mixture with gravel grains with a particle size of over 70 mm, but not more than 150 mm.

1.7. The grain composition of gravel included in the natural sand-gravel mixture must meet the requirements specified in table. .

Table 1

1.8. The grain composition of gravel included in the enriched sand-gravel mixture must meet the requirements specified in table. .

table 2

1.9. The strength of gravel included in the natural and enriched sand-gravel mixture, the content of weak rock grains in it and frost resistance must meet the requirements of GOST 8267.

1.10. The sands included in the natural sand-gravel mixture in terms of grain composition must meet the requirements of GOST 8736 for coarse, medium, fine and very fine sands.

The sands included in the enriched sand-gravel mixture must meet the grain composition requirements of GOST 8736 for coarse, medium and fine sands. The content of particles passing through a sieve with mesh No. 014 in sands that are part of a natural sand-gravel mixture should not exceed 20%, and enriched - 10% by weight.

1.11. The content of dust and clay particles in a natural sand-gravel mixture should not exceed 5%, including 1% clay in lumps, and 3% and 0.5% by weight, respectively, in an enriched mixture.

1.12. Sand and gravel mixtures should not contain clogging inclusions.

1.13. Natural and enriched sand-gravel mixtures depending on the value of the total specific effective activity of natural radionuclides A eff is used:

for the production of materials, products and structures used for the construction and reconstruction of residential and public buildings in A eff up to 370 Bq/kg;

for the production of building materials for the construction of roads and airfields outside populated areas with A eff above 740 Bq/kg to 1500 Bq/kg.

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.

2. ACCEPTANCE RULES

2.1. The sand-gravel mixture produced by the manufacturing enterprise (quarry) must be accepted by the technical control department of this enterprise.

When shipping by road, a batch is considered to be the amount of mixture shipped to one consumer within one day.

2.3. The quantity of the supplied mixture is determined by volume or weight. The mixture is measured in wagons, ships, and cars.

2.4. Weighing the mixture shipped in wagons or automobiles is carried out on railway or automobile scales. The mass of the mixture shipped in ships is determined by the vessel's draft.

2.6. Determination of the grain composition of the mixture, the content of dust, clay and silt particles, including clay in lumps, is carried out daily.

2.8. Sampling of the mixture for testing is carried out in accordance with GOST 8269.0. The sample size is the same as for unfractionated gravel.

2.7, 2.8 (Changed edition, Amendment No. 1).

2.9. When checking the compliance of the sand-gravel mixture with the requirements of this standard, the consumer must use the sampling procedure given below.

Note. It is allowed to carry out a quality control check of the mixture per carload.

The quality of the mixture is determined by the arithmetic average of the test results of all samples.

2.13. The mass of samples taken for control testing of a batch of railway cars, ships or cars in accordance with the requirements of paragraphs. - must be at least 5 times the total mass of samples for testing according to GOST 8269.0. Samples are reduced to the required size using the quartering method or using grooved dividers.

(Changed edition, Amendment No. 1).

3. TEST METHODS

3.1. Testing of gravel and sand included in the sand-gravel mixture for all indicators, except grain composition, is carried out separately according to GOST 8269.0 and GOST 8735.

To prepare the mixture for testing, it is divided into gravel and sand, while ensuring the maximum content of gravel in sand and sand in gravel, established respectively by GOST 8736 and GOST 8267.

3.2. The determination of the grain composition of the mixture is carried out in the same manner as the determination according to GOST 8269.0 of the grain composition of unfractionated gravel, by sifting on sieves after preliminary drying of the entire sample to a constant weight. In this case, the standard set of sieves additionally includes the following sieves: a sieve with round holes with a diameter of 2.5 mm and a mesh of 1.25; 0.63 and 0.315. Partial residues on sieves are calculated as a percentage of the initial mass of the sifted sample, including the amount of material that passed through a sieve with holes measuring 0.14 mm.

3.1 – 3.3 (Changed edition, Amendment No. 1).

3.4. The total specific effective activity of natural radionuclides is determined by the gamma spectrometric method according to GOST 30108.

(Introduced additionally, Amendment No. 1).

4. MARKING, TRANSPORTATION AND STORAGE

4.1. The manufacturing enterprise (quarry) is obliged to accompany each batch of the supplied mixture with a document of the established form, which must indicate:

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

date of preparation of the document and its number;

name and address of the consumer;

batch number and quantity of sand and gravel mixture;

wagon numbers or vessel number and invoice numbers;

type of sand and gravel mixture (natural or enriched);

largest gravel size;

grain composition of gravel;

gravel grade by strength;

frost resistance of gravel;

sand fineness module, residue on sieve No. 063 and passage through sieve No. 014;

designation of this standard;

total specific effective activity of natural radionuclides.

(Changed edition, Amendment No. 1).

4.4. Sand and gravel mixtures are transported and stored under conditions that protect them from clogging and contamination.

5. SUPPLIER WARRANTY

5.1. The manufacturing enterprise (quarry) must guarantee compliance of the sand and gravel mixture with the requirements of this standard.

INFORMATION DATA

1. DEVELOPED by the Ministry of Construction Materials Industry of the USSR, the Ministry of Transport Construction

INTRODUCED by the USSR Ministry of Construction Materials Industry

2. APPROVED AND ENTERED INTO EFFECT by Resolution of the USSR State Committee for Construction Affairs dated June 22, 1979 No. 92

3. INTRODUCED FOR THE FIRST TIME

Change No. 1 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 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	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

4. REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS

5. EDITION (May 2003) with Amendment No. 1, adopted in December 2000 (IUS 5-2001)

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INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION

INTERSTATE

STANDARD

SAND-GRAVEL MIXTURES FOR CONSTRUCTION WORK

Specifications

Official publication

Standardinform

Preface

The goals, basic principles and basic procedure for work on interstate standardization are established by GOST 1.0-92 “Interstate standardization system. Basic provisions" and GOST 1.2-2009 "Interstate standardization system. Interstate standards, rules and recommendations for interstate standardization. Rules for development, acceptance, application, updating and cancellation"

Standard information

1 DEVELOPED by the Federal State Unitary Enterprise "Research and Design and Survey Institute for the Problems of Mining, Transport and Processing of Mineral Raw Materials in the Construction Materials Industry" (FSUE "VNIPIIstromsyrye")

2 INTRODUCED by the Technical Committee for Standardization TC 465 “Construction”

3 ADOPTED by the Interstate Council for Standardization, Metrology and Certification (protocol dated December 5, 2014 No. 46-2014)

4 By Order of the Federal Agency for Technical Regulation and Metrology dated December 12, 2014 No. 2033-st, the interstate standard GOST 23735-2014 was put into effect as a national standard of the Russian Federation on July 1, 2015.

Information about changes to this standard is published in the annual information index “National Standards”, and the text of changes and amendments is published in the monthly information index “National Standards”. In case of revision (replacement) or cancellation of this standard, the corresponding notice will be published in the monthly information index “National Standards”. Relevant information, notifications and texts are also posted in the public information system - on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet

In the Russian Federation, this standard cannot be fully or partially reproduced, replicated and distributed as an official publication without permission from the Federal Agency for Technical Regulation and Metrology

GOST 23735-2014

STANDARD

INTERSTATE

SAND-GRAVEL MIXTURES FOR CONSTRUCTION WORKS Technical specifications

Sandy-gravel mixtures for construction work. Specifications

Date of introduction - 2015-07-01

1 area of use

This standard applies to sand-gravel mixtures obtained from gravel-sand and boulder-gravel-sand rocks in accordance with GOST 31426 and used for the construction of lower layers of bases for road surfaces, drainage layers, road embankments, temporary roads, backfilling of pits, trenches, installations pillows for monolithic foundations, backfilling of foundations for various sites, for planning and landscaping, for reclamation and other types of construction, in accordance with the requirements of building codes and regulations for the relevant types of work.

This standard does not apply to sand and gravel mixtures used as aggregates for concrete.

2 Normative references

This standard uses normative references to the following interstate standards:

4.4.3 Indicators of the properties of the sand component include:

Grain composition;

Size module;

Mineralogical and petrographic composition (at the consumer’s request)

4.4.4 Sands included in the natural sand-gravel mixture, in terms of grain composition, must comply with the requirements of GOST 8736 for coarse, medium, fine and very fine sands. The content of particles passing through a sieve with mesh No. 016 should not exceed 20% by weight.

4.4.5 Sands included in the enriched sand-gravel mixture must, in terms of grain composition, comply with the requirements of GOST 8736 for coarse, medium and fine sands. The content of particles passing through a sieve with mesh No. 016 should not exceed 10% by weight.

5 Acceptance rules

5.1 Sand and gravel mixtures must be accepted by the technical control of the manufacturer. Acceptance and delivery of sand and gravel mixture is carried out in batches.

5.2 A batch is considered to be the quantity of sand and gravel mixture established in the supply contract and simultaneously shipped to one consumer in one railway car or in one vessel. When shipping by road, a batch is considered to be the amount of sand and gravel mixture shipped to one consumer per day.

5.3 To verify compliance of the quality of the sand-gravel mixture with the requirements of this standard, acceptance inspection and periodic testing are carried out.

5.4 Acceptance control at the manufacturer is carried out daily by testing a combined sample taken in accordance with GOST 8269.0.

5.5 During acceptance control, the following is determined:

Grain composition of sand and gravel mixture;

5.6 During periodic tests, determine:

Once a quarter and whenever the properties of the rock being developed change: the strength of gravel and the bulk density of the mixture (bulk density at humidity during shipment is determined as necessary);

Once a year - frost resistance of gravel and the class of the sand-gravel mixture according to the value of the specific effective activity of natural radionuclides.

5.7 When checking the quality of the sand-gravel mixture, the consumer must apply the procedure for sampling from vehicles provided for by GOST 8267.

5.8 The quantity of supplied sand and gravel mixture is determined by volume or weight as agreed between the supplier and the consumer in accordance with GOST 8267 or GOST 8736.

5.9 The manufacturer must accompany each batch of supplied sand and gravel mixture with a quality document indicating:

Name of the manufacturer and its address;

Number and date of issue of the document;

Name and address of the consumer;

Batch number, name and quantity of supplied sand and gravel mixture in cubic meters;

Car numbers or vessel number and invoice numbers;

Type of sand and gravel mixture;

Grain composition of the mixture;

The largest grain size of gravel;

Grade according to the crushability of gravel in the mixture;

Frost resistance grade of gravel in the mixture;

Sand fineness module, passage through a sieve with mesh No. 016;

Specific effective activity of natural radionuclides of the mixture;

Designation of this standard.

6 Test methods

6.1 The grain composition of the sand-gravel mixture is determined in the manner established by GOST 8269.0, while the standard set of sieves includes additional sieves with meshes No. 063, 0315 and 016.

6.3 The bulk density of the sand-gravel mixture is determined according to GOST 8269.0, the specific effective activity of natural radionuclides - according to GOST 30108, the filtration coefficient - according to GOST 25607.

6.4 To determine the properties of gravel and sand included in the sand-gravel mixture, it is divided into gravel and sand, while ensuring the maximum content of gravel in sand and sand in gravel, established respectively by GOST 8736 and GOST 8267.

6.5 The grain composition of gravel is determined by calculation using data on the grain composition of the sand-gravel mixture obtained in accordance with 6.1. The content in gravel of each of the fractions included in its composition a, g%%, is determined by the formula

where a irjr is the content of the gravel fraction in the sand-gravel mixture, %;

6.6 The strength of gravel, the content of weak rock grains in it, frost resistance, the content of dust and clay particles and clay in lumps are determined according to GOST 8269.0.

6.7 The grain composition of sand is determined by calculation using data on the grain composition of the sand-gravel mixture obtained in accordance with 6.1. The content in the sand of each of the fractions included in its composition a 1P,%, is determined by the formula

4 GOST 23735-2014

"„= - 100, (2)

where a ijrjr is the content of the sand fraction in the sand-gravel mixture, %;

Aw is the total content of sand fractions in the sand-gravel mixture, %.

6.8 The modulus of sand fineness, the content of dust and clay particles, clay in lumps and organic impurities (humic substances) are determined according to GOST 8735.