GOST 5578-94
Group W17
INTERSTATE STANDARD
Crushed stone and sand from ferrous and non-ferrous metallurgy slags for concrete
Technical conditions
Slag crushed stone and slag sand of ferrous and non-ferrous metallurgy for concretes. Specifications
OKS 91.100.20
OKSTU 5718
Date of introduction 1996-01-01
Foreword
1 DEVELOPED by the NIIZhB Institute with the participation of VNIPIIstromsyrye, UralNIIstromproekt JSC "NEP" Ural Institute of Metals "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 (ISTC) on November 17, 1994
Voted for adoption
State name | The name of the state body |
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 Russian Federation | Ministry of Construction of Russia |
The Republic of Tajikistan | Gosstroy of the Republic of Tajikistan |
The Republic of Uzbekistan | Goskomarkhitektstroy of the Republic of Uzbekistan |
3 PUT INTO ACTION since January 1, 1996 as a state standard of the Russian Federation by the Decree of the Ministry of Construction of Russia dated April 12, 1995, N 18-37
4 REPLACE GOST 5578-76
Corrected by the manufacturer of the database
1 area of use
1 AREA OF USE
This standard applies to crushed stone and sand from blast-furnace and ferroalloy (silicomanganese) slags of ferrous metallurgy and nickel and copper smelting slags of non-ferrous metallurgy, used as aggregates for heavy, fine-grained, heat-resistant concretes and for backfill.
The standard does not apply to crushed stone and sand for road construction and granular slag for cement production.
The requirements set out in clauses 4.2, 4.3.1-4.3.5, 4.3.8, sections 5 and 6 are mandatory.
2 Normative references
GOST 3344-83 Crushed stone and sand slag for road construction. Technical conditions
GOST 5382-91 Cements and materials for cement production. Chemical analysis methods
GOST 8269-87 Natural crushed stone, gravel and gravel crushed stone. Test methods
GOST 8735-88 Sand for construction work. Test methods
GOST 9758-86 Porous inorganic aggregates for construction work. Test methods
GOST 30108-94 Building materials and products. Determination of the specific effective activity of natural radionuclides
3 Definitions
The following terms are used in this standard.
Slag crushed stone is an inorganic granular bulk material with a grain size of St. 5 mm, obtained by crushing black slags (blast furnace and ferroalloy) and non-ferrous metallurgy.
Sand from slag crushing screenings is an inorganic granular bulk material with a grain size of up to 5 mm, obtained by separating ferrous and nonferrous metallurgy slags from crushing screenings into crushed stone.
Sand from granulated slags is an inorganic granular bulk material with a grain size of up to 5 mm, obtained by crushing granular slags of non-ferrous metallurgy using special crushing and screening equipment.
4 Technical requirements
4.1 Crushed stone and slag sand of ferrous and non-ferrous metallurgy (hereinafter referred to as crushed stone and sand) must be manufactured in accordance with the requirements of this standard according to the technological documentation approved by the manufacturer.
4.2 Main parameters and dimensions
4.2.1 Crushed stone is produced in the following main fractions: from 5 (3) to 10 mm, St. 10 to 20 mm, St. 20 to 40 mm, St. 40 to 80 (70) mm and a mixture of fractions from 5 (3) to 20 mm.
4.2.2 The total residues on the control sieves when sieving crushed stone of the indicated fractions and the mixture of fractions must correspond to those indicated in Table 1, where and are the smallest and largest nominal grain sizes.
Table 1
Diameter of holes of control sieves, mm | ||||
Total residues on sieves,% by weight | 90 to 100 | 30 to 80 | ||
Note - For crushed stone of fraction from 5 (3) to 10 mm, sieves of 2.5 and 1, 25 mm are used, the total residues on which should be, respectively, from 95 to 100% by weight. |
||||
4.2.3 The shape of crushed stone grains is characterized by the content of lamellar (flaky) and needle-shaped grains. Crushed stone, depending on the content of lamellar and needle-shaped grains, is divided into 3 groups, which must correspond to those indicated in table 2.
table 2
A group of crushed stone in the shape of grains | |
Up to 15 incl. |
|
St. 15 to 25 |
|
4.2.4 The strength of crushed stone is characterized by a brand determined by the crushed stone crushing during compression (crushing) in a cylinder in a dry state.
Crushed stone grades must correspond to the values indicated in table 3.
Table 3
Grinding grade | Weight loss when testing crushed stone,% |
Up to 10 incl. |
|
St. 10 to 15 - "- |
|
4.2.5 Frost resistance of crushed stone is characterized by the number of cycles of alternating freezing and thawing, in which the loss in percentage by weight does not exceed the values specified in Table 4.
Table 4
Test type | Crushed stone frost resistance grade |
|||||||
Freezing - thawing: | ||||||||
Cycles | ||||||||
Weight loss after testing,% no more | ||||||||
4.2.6 Depending on the grain size composition, sand is subdivided into groups by size. Each group of sand is characterized by the size modulus value specified in table 5.
Table 5
Sand group | Size module |
Very large | |
Increased size | |
Large | |
Average | |
4.2.7 The total remainder of sand on a sieve with a mesh N 063 should correspond to the values specified in table 6.
Table 6
Percentage by weight
Sand group | Total residue on sieve N 063 |
Very large | |
Increased size | |
Large | |
Average | |
4.2.8 The grain size composition of sand from granulated slags of non-ferrous metallurgy, obtained by crushing in special crushing and screening equipment, must correspond to the values specified in Table 7.
Table 7
Percentage by weight
Test sieve opening size, mm | Total balance on control sieves |
20 to 50 |
|
Pass through a sieve N 016 | |
Size module | " 1,6 " 2,7 |
Table 8
In percent by weight, no more
Sand name | |||
St. 10 mm | Less than 0.16mm |
||
From screenings of crushing of slags | |||
From granular slags | |||
4.3 Characteristics
4.3.1 Losses on ignition in crushed stone and sand should not exceed, in% by weight:
7 - from dump slag;
3 - from slags of the current outlet and ladle residues.
4.3.2 Crushed stone and sand should have a stable structure against silicate and sulphide degradation.
The content of iron and manganese oxides in crushed stone and sand from blast furnace slags should not be more than 3% by weight, while the content of sulfide sulfur should not be more than 1.5% by weight.
The weight loss in determining the resistance to silicate and ferruginous decomposition should not be more than 5 and 8%, respectively.
4.3.3 The content of sulfur and sulfuric acid compounds in crushed stone and sand in terms of should not be more than 4.5% by weight.
7 - in crushed stone and sand from slags of the current exit and ladle residues when determined by elutriation;
1 - in the sand from granular slags of the current output when determined by swelling;
3 - in crushed stone from dump slags when determined by elutriation;
3 - in sand from dump slags when determined by swelling.
5 - in rubble;
3 - in the sand.
4.3.7 Crushed stone and sand should not contain foreign contaminants.
4.3.8 Crushed stone and sand should be given a radiation-hygienic assessment, the results of which determine the area of its application. Crushed stone and sand, depending on the values of the specific effective activity of natural radionuclides, are used:
At up to 370 Bq / kg - in newly constructed residential and public buildings;
- with St. 370 to 740 Bq / kg - in newly constructed industrial buildings and structures.
5 Acceptance rules
5.1 Crushed stone and sand must be accepted by the technical control of the manufacturer.
5.2 Acceptance and delivery of crushed stone and sand is carried out in batches. A batch is considered the amount of crushed stone of one fraction (mixture of fractions), and for sand - one size module, simultaneously shipped to one consumer in one train. When shipped by road, a batch is considered the amount of crushed stone of one fraction, and for sand - one size module shipped to one consumer during the day.
5.3 To check the conformity of the quality of crushed stone and sand to the requirements of this standard, acceptance and periodic tests are carried out.
Acceptance control at the manufacturer is carried out daily by testing a combined sample of crushed stone (sand) taken from each processing line.
During acceptance tests, it is determined:
for crushed stone and sand, the grain size composition, the content of dust particles, and for crushed stone and sand from dump slags, also the content of clay in lumps.
5.4 During periodic tests, it is determined:
- once every 10 days - the content of metal inclusions, grain shape, loss on ignition;
- once a quarter - the stability of the structure against decay, the content of sulfur and sulfuric acid compounds, the content of sulfide sulfur, the content of manganese and iron oxides, strength, bulk density;
- once a year - frost resistance of crushed stone and the value of the specific effective activity of natural radionuclides.
The value of the specific effective activity of natural radionuclides, the stability of the structure against decay, the content of sulfur and sulfuric acid compounds and sulfide sulfur, manganese and iron oxides, strength and frost resistance are also determined every time the raw material or technology for the production of crushed stone and sand is changed.
5.5 The selection and preparation of crushed stone samples for quality control at the manufacturer is carried out in accordance with GOST 8269, sand - GOST 8735.
5.6 A batch of crushed stone and sand is considered accepted based on the results of acceptance and periodic tests, if the values of the indicators correspond to the requirements of this standard.
If the test results are unsatisfactory for at least one of the indicators, repeated tests are carried out for this indicator. The result of the retest is final.
5.7 The amount of crushed stone and sand supplied is determined by weight or volume.
The mass of crushed stone and sand shipped in wagons or cars is determined by weighing on railway and truck scales, shipped on ships - according to the draft of the ship.
The volume of crushed stone and sand in the vehicle is determined by measurement.
The recalculation of the amount of crushed stone and sand in a batch from units of mass to units of volume is carried out according to the value of the bulk density determined in the wet state at the time of shipment.
The volume of crushed stone and sand at the consumer must be determined taking into account the compaction coefficient established by agreement between the manufacturer and the consumer, depending on the distance of transportation, but not more than 1.10.
5.8 Each batch of crushed stone and sand must be accompanied by a quality document, which indicates:
Manufacturer's name and address;
Number and date of issue of the document;
The name and address of the consumer;
Lot number and amount of crushed stone (sand);
Wagon number or vessel number and invoice numbers;
Grain composition (size modulus) of crushed stone (sand);
Grade by crushing and frost resistance of crushed stone;
- loss on ignition;
Stability of the structure against silicate and ferruginous decomposition;
- the content of sulfurous and sulfuric acid compounds;
- the content of dust particles, and for crushed stone (sand) from dump slags and the content of clay in lumps;
Specific effective activity of natural radionuclides in crushed stone (sand). . GOST 30108.
7 Transport and storage
7.1 Crushed stone and sand are transported in bulk in vehicles of any kind in accordance with the current rules for the carriage of goods and the technical conditions for loading and securing goods *, approved by the Ministry of Railways, the rules for the carriage of goods by road and water transport.
_____________
* Probably a mistake in the original. Should read: "Technical conditions for loading and securing cargo"... - Note from the manufacturer of the database.
When transporting crushed stone and sand by rail, wagons should be loaded taking into account the full use of their carrying capacity.
7.2 Crushed stone is stored separately in fractions, sand - in size modulus under conditions that protect them from clogging and contamination.
Appendix A (informative). Bibliography
Appendix A
(informational)
Temporary criteria for the organization of control and decision-making | "Limitation of public exposure from natural sources of ionizing radiation" *. Moscow, 1991. |
|
& nbsp _____________ * The document is not valid on the territory of the Russian Federation. They do. - Note from the manufacturer of the database. |
||
Electronic text of the document
prepared by JSC "Kodeks" and verified by:
official publication
Moscow: IPK Standards Publishing House, 1995
Document revision taking into account
changes and additions prepared
JSC "Codex"
GOST 5578-94
Group W17
INTERSTATE STANDARD
Crushed stone and sand from ferrous and non-ferrous metallurgy slags for concrete
Technical conditions
Slag crushed stone and slag sand of ferrous and non-ferrous metallurgy for concretes. Specifications
OKS 91.100.20
OKSTU 5718
Date of introduction 1996-01-01
Foreword
1 DEVELOPED by the NIIZhB Institute with the participation of VNIPIIstromsyrye, UralNIIstromproekt JSC "NEP" Ural Institute of Metals "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 (ISTC) on November 17, 1994
Voted for adoption
State name | The name of the state body |
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 Russian Federation | Ministry of Construction of Russia |
The Republic of Tajikistan | Gosstroy of the Republic of Tajikistan |
The Republic of Uzbekistan | Goskomarkhitektstroy of the Republic of Uzbekistan |
3 PUT INTO ACTION since January 1, 1996 as a state standard of the Russian Federation by the Decree of the Ministry of Construction of Russia dated April 12, 1995, N 18-37
4 REPLACE GOST 5578-76
Corrected by the manufacturer of the database
1 area of use
1 AREA OF USE
This standard applies to crushed stone and sand from blast-furnace and ferroalloy (silicomanganese) slags of ferrous metallurgy and nickel and copper smelting slags of non-ferrous metallurgy, used as aggregates for heavy, fine-grained, heat-resistant concretes and for backfill.
The standard does not apply to crushed stone and sand for road construction and granular slag for cement production.
The requirements set out in clauses 4.2, 4.3.1-4.3.5, 4.3.8, sections 5 and 6 are mandatory.
2 Normative references
GOST 3344-83 Crushed stone and slag sand for road construction. Technical conditions
GOST 5382-91 Cements and materials for cement production. Chemical analysis methods
GOST 8269-87 Natural crushed stone, gravel and gravel crushed stone. Test methods
GOST 8735-88 Sand for construction work. Test methods
GOST 9758-86 Porous inorganic fillers for construction work. Test methods
GOST 30108-94 Building materials and products. Determination of the specific effective activity of natural radionuclides
3 Definitions
The following terms are used in this standard.
Slag crushed stone is an inorganic granular bulk material with a grain size of St. 5 mm, obtained by crushing black slags (blast furnace and ferroalloy) and non-ferrous metallurgy.
Sand from slag crushing screenings is an inorganic granular bulk material with a grain size of up to 5 mm, obtained by separating ferrous and nonferrous metallurgy slags from crushing screenings into crushed stone.
Sand from granulated slags is an inorganic granular bulk material with a grain size of up to 5 mm, obtained by crushing granular slags of non-ferrous metallurgy using special crushing and screening equipment.
4 Technical requirements
4.1 Crushed stone and slag sand of ferrous and non-ferrous metallurgy (hereinafter referred to as crushed stone and sand) must be manufactured in accordance with the requirements of this standard according to the technological documentation approved by the manufacturer.
4.2 Main parameters and dimensions
4.2.1 Crushed stone is produced in the following main fractions: from 5 (3) to 10 mm, St. 10 to 20 mm, St. 20 to 40 mm, St. 40 to 80 (70) mm and a mixture of fractions from 5 (3) to 20 mm.
4.2.2 The total residues on the control sieves when sieving crushed stone of the indicated fractions and the mixture of fractions must correspond to those indicated in Table 1, where and are the smallest and largest nominal grain sizes.
Table 1
Diameter of holes of control sieves, mm | ||||
Total residues on sieves,% by weight | 90 to 100 | 30 to 80 | ||
Note - For crushed stone of fraction from 5 (3) to 10 mm, sieves of 2.5 and 1, 25 mm are used, the total residues on which should be, respectively, from 95 to 100% by weight. |
||||
4.2.3 The shape of crushed stone grains is characterized by the content of lamellar (flaky) and needle-shaped grains. Crushed stone, depending on the content of lamellar and needle-shaped grains, is divided into 3 groups, which must correspond to those indicated in table 2.
table 2
A group of crushed stone in the shape of grains | |
Up to 15 incl. |
|
St. 15 to 25 |
|
4.2.4 The strength of crushed stone is characterized by a brand determined by the crushed stone crushing during compression (crushing) in a cylinder in a dry state.
Crushed stone grades must correspond to the values indicated in table 3.
Table 3
Grinding grade | Weight loss when testing crushed stone,% |
Up to 10 incl. |
|
St. 10 to 15 - "- |
|
4.2.5 Frost resistance of crushed stone is characterized by the number of cycles of alternating freezing and thawing, in which the loss in percentage by weight does not exceed the values specified in Table 4.
Table 4
Test type | Crushed stone frost resistance grade |
|||||||
Freezing - thawing: | ||||||||
Cycles | ||||||||
Weight loss after testing,% no more | ||||||||
4.2.6 Depending on the grain size composition, sand is subdivided into groups by size. Each group of sand is characterized by the size modulus value specified in table 5.
Table 5
Sand group | Size module |
Very large | |
Increased size | |
Large | |
Average | |
4.2.7 The total remainder of sand on a sieve with a mesh N 063 should correspond to the values specified in table 6.
Table 6
Percentage by weight
Sand group | Total residue on sieve N 063 |
Very large | |
Increased size | |
Large | |
Average | |
4.2.8 The grain size composition of sand from granulated slags of non-ferrous metallurgy, obtained by crushing in special crushing and screening equipment, must correspond to the values specified in Table 7.
Table 7
Percentage by weight
Test sieve opening size, mm | Total balance on control sieves |
20 to 50 |
|
Pass through a sieve N 016 | |
Size module | " 1,6 " 2,7 |
Table 8
In percent by weight, no more
Sand name | |||
St. 10 mm | Less than 0.16mm |
||
From screenings of crushing of slags | |||
From granular slags | |||
4.3 Characteristics
4.3.1 Losses on ignition in crushed stone and sand should not exceed, in% by weight:
7 - from dump slag;
3 - from slags of the current outlet and ladle residues.
4.3.2 Crushed stone and sand should have a stable structure against silicate and sulphide degradation.
The content of iron and manganese oxides in crushed stone and sand from blast furnace slags should not be more than 3% by weight, while the content of sulfide sulfur should not be more than 1.5% by weight.
The weight loss in determining the resistance to silicate and ferruginous decomposition should not be more than 5 and 8%, respectively.
4.3.3 The content of sulfur and sulfuric acid compounds in crushed stone and sand in terms of should not be more than 4.5% by weight.
7 - in crushed stone and sand from slags of the current exit and ladle residues when determined by elutriation;
1 - in the sand from granular slags of the current output when determined by swelling;
3 - in crushed stone from dump slags when determined by elutriation;
3 - in sand from dump slags when determined by swelling.
5 - in rubble;
3 - in the sand.
4.3.7 Crushed stone and sand should not contain foreign contaminants.
4.3.8 Crushed stone and sand should be given a radiation-hygienic assessment, the results of which determine the area of its application. Crushed stone and sand, depending on the values of the specific effective activity of natural radionuclides, are used:
At up to 370 Bq / kg - in newly constructed residential and public buildings;
- with St. 370 to 740 Bq / kg - in newly constructed industrial buildings and structures.
5 Acceptance rules
5.1 Crushed stone and sand must be accepted by the technical control of the manufacturer.
5.2 Acceptance and delivery of crushed stone and sand is carried out in batches. A batch is considered the amount of crushed stone of one fraction (mixture of fractions), and for sand - one size module, simultaneously shipped to one consumer in one train. When shipped by road, a batch is considered the amount of crushed stone of one fraction, and for sand - one size module shipped to one consumer during the day.
5.3 To check the conformity of the quality of crushed stone and sand to the requirements of this standard, acceptance and periodic tests are carried out.
Acceptance control at the manufacturer is carried out daily by testing a combined sample of crushed stone (sand) taken from each processing line.
During acceptance tests, it is determined:
for crushed stone and sand, the grain size composition, the content of dust particles, and for crushed stone and sand from dump slags, also the content of clay in lumps.
5.4 During periodic tests, it is determined:
- once every 10 days - the content of metal inclusions, grain shape, loss on ignition;
- once a quarter - the stability of the structure against decay, the content of sulfur and sulfuric acid compounds, the content of sulfide sulfur, the content of manganese and iron oxides, strength, bulk density;
- once a year - frost resistance of crushed stone and the value of the specific effective activity of natural radionuclides.
The value of the specific effective activity of natural radionuclides, the stability of the structure against decay, the content of sulfur and sulfuric acid compounds and sulfide sulfur, manganese and iron oxides, strength and frost resistance are also determined every time the raw material or technology for the production of crushed stone and sand is changed.
5.5 The selection and preparation of crushed stone samples for quality control at the manufacturing plant is carried out in accordance with GOST 8269, sand - GOST 8735.
5.6 A batch of crushed stone and sand is considered accepted based on the results of acceptance and periodic tests, if the values of the indicators correspond to the requirements of this standard.
If the test results are unsatisfactory for at least one of the indicators, repeated tests are carried out for this indicator. The result of the retest is final.
5.7 The amount of crushed stone and sand supplied is determined by weight or volume.
The mass of crushed stone and sand shipped in wagons or cars is determined by weighing on railway and truck scales, shipped on ships - according to the draft of the ship.
The volume of crushed stone and sand in the vehicle is determined by measurement.
The recalculation of the amount of crushed stone and sand in a batch from units of mass to units of volume is carried out according to the value of the bulk density determined in the wet state at the time of shipment.
The volume of crushed stone and sand at the consumer must be determined taking into account the compaction coefficient established by agreement between the manufacturer and the consumer, depending on the distance of transportation, but not more than 1.10.
5.8 Each batch of crushed stone and sand must be accompanied by a quality document, which indicates:
Manufacturer's name and address;
Number and date of issue of the document;
The name and address of the consumer;
Lot number and amount of crushed stone (sand);
Wagon number or vessel number and invoice numbers;
Grain composition (size modulus) of crushed stone (sand);
Grade by crushing and frost resistance of crushed stone;
- loss on ignition;
Stability of the structure against silicate and ferruginous decomposition;
- the content of sulfurous and sulfuric acid compounds;
- the content of dust particles, and for crushed stone (sand) from dump slags and the content of clay in lumps;
Specific effective activity of natural radionuclides in crushed stone (sand). GOST 3344 GOST 30108.
7 Transport and storage
7.1 Crushed stone and sand are transported in bulk in vehicles of any kind in accordance with the current rules for the carriage of goods and the technical conditions for loading and securing goods *, approved by the Ministry of Railways, the rules for the carriage of goods by road and water transport.
_____________
* Probably a mistake in the original. It should read: "Technical conditions for loading and securing cargo". - Note from the manufacturer of the database.
When transporting crushed stone and sand by rail, wagons should be loaded taking into account the full use of their carrying capacity.
7.2 Crushed stone is stored separately in fractions, sand - in size modulus under conditions that protect them from clogging and contamination.
Appendix A (informative). Bibliography
Appendix A
(informational)
Temporary criteria for the organization of control and decision-making | "Limitation of public exposure from natural sources of ionizing radiation" *. Moscow, 1991. |
|
& nbsp _____________ * The document is not valid on the territory of the Russian Federation. They do. - Note from the manufacturer of the database. |
||
Electronic text of the document
prepared by JSC "Kodeks" and verified by:
official publication
Moscow: IPK Standards Publishing House, 1995
Document revision taking into account
changes and additions prepared
JSC "Codex"
Excellent, inexpensive raw materials for construction needs are made from metallurgical waste. Despite the "secondary" origin, crushed slag takes a worthy place next to other crushed stones.
There are 2 manufacturing methods:
1. Processing of dump, electric steel-smelting, copper and other types of solidified slag. The resulting raw material, dump crushed stone, is divided into 3 groups, depending on the size of the fraction:
- small - from 5 to 20 mm;
- medium - from 20 to 40 mm;
- large - from 40 to 70 mm.
2. Specialized processing of melts. In order to obtain raw materials, a fiery liquid composition from ladles adapted for these purposes is poured into prepared foundry sites or into trenches, the thickness of each layer is from 200 to 500 mm. Then it is kept in the open air for several hours until it cools down to 800 ° C and crystallizes. After cooling with water, they achieve the appearance of cracks in it, after which they are crushed. The resulting raw material is called crushed stone.
Technical characteristics of crushed stone from slag:
- bulk density - not less than 1,000 kg / m 3;
- the content of lamellar and needle-shaped grains for a cuboid fraction - no more than 15%; improved - 25%, normal - 35%;
- strength - M1200, M1000, M800, M600, M300;
- dust and clay particles content - no more than 3%;
- sulfur content - up to 2.5%.
Cast crushed stone has several other characteristics:
- bulk density - 1 200–1 500 kg / m 3;
- true density - 2,900-3,000 kg / m 3;
- water absorption - from 1 to 5% by weight;
- compressive strength - from 60 to 100 MPa.
Application features
Since it has good strength, which only increases during the operation of products, and also tolerates temperature fluctuations well without losing its properties, the scope of its use is quite extensive.
The use of crushed stone from dump metallurgical slag is associated with the manufacture of concrete. The finest fraction is suitable for the production of refractory concrete, blocks and slabs from which high-strength industrial facilities are erected, as well as for the production of asphalt and related materials.
The middle fraction is in demand in the production of reinforced concrete products, it is used to fill various types of concrete, cinder blocks, paving slabs and as a backfill for road surfaces.
Coarse-grained material is also in demand in all the cases described above, and it is also used for finishing the basements of buildings and in landscape design.
To obtain a high-quality road surface, it is preferable to buy crushed stone from electric steel-melting slag.
Cast has good, stable indicators of resistance to temperature extremes and resistance to abrasion, it is used for road construction work, in the production of mineral wool, it serves as an excellent raw material for filling heavy types of concrete mixtures and casting reinforced concrete products.
INTERSTATE STANDARD
FOR CONCRETE
TECHNICAL CONDITIONS
Official edition
INTERSTATE SCIENTIFIC AND TECHNICAL COMMISSION FOR STANDARDIZATION AND TECHNICAL REGULATION
IN CONSTRUCTION (MNTKS)
Foreword
1 DEVELOPED by the NIIZhB Institute with the participation of VNIPIist-romsyrye, UralNIIstromproekt JSC "NEP" Ural Institute of Metals "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 (ISTC) on November 17, 1994
3 PUT INTO EFFECT from January 1, 1996 as a state standard of the Russian Federation by the Decree of the Ministry of Construction of Russia dated April 12, 1995, No. 18-37
4 REPLACE GOST 5578-76
© IPK Standards Publishing House, 1995
This standard may not be fully or partially reproduced, replicated and distributed as an official publication on the territory of the Russian Federation without the permission of M instroy of Russia
1 Scope ......................... 1
3 Definitions ............................. 2
4 Technical requirements ...................... 2
5 Acceptance rules .......................... 6
6 Control methods .......................... 8
7 Transport and storage .................. 9
Appendix A Bibliography .................... 10
INTERSTATE STANDARD
Crushed stone and sand from ferrous and non-ferrous metallurgy slags
FOR CONCRETE
Technical conditions
Slag crushed stone and slag sand of ferrous and non-ferrous metallurgy for concretes. Specifications
Date of introduction 1996-01-01
1 AREA OF USE
This standard applies to crushed stone and sand from blast-furnace and ferroalloy (silicomanganese) slags of ferrous metallurgy and nickel and copper smelting slags of non-ferrous metallurgy, used as aggregates for heavy, fine-grained, heat-resistant concretes and for backfill.
The standard does not apply to crushed stone and sand for road construction and granular slag for cement production.
The requirements set out in clauses 4.1.2-4L.8, 4.2.1-4.2.5, 4.2.8, sections 5 and 6 are mandatory.
GOST 3344-83 Crushed stone and slag sand for road construction. Technical conditions
Official edition
GOST 5382-91 Cements and materials for cement production. Chemical analysis methods
GOST 8269-87 Natural crushed stone, gravel and gravel crushed stone. Test methods
GOST 8735-88 Sand for construction work. Test methods
GOST 9758-86 Porous inorganic fillers for construction work. Test methods
GOST 30108-94 Building materials and products. Determination of the specific effective activity of natural radionuclides
3 DEFINITIONS
The following terms are used in this standard.
Slag crushed stone is an inorganic granular bulk material with a grain size of St. 5 mm, obtained by crushing black slags (blast furnace and ferroalloy) and non-ferrous metallurgy.
Sand from slag crushing screenings is an inorganic granular bulk material with a grain size of up to 5 mm, obtained by separating ferrous and nonferrous metallurgy slags from crushing screenings into crushed stone.
Sand from granulated slags is an inorganic granular bulk material with a grain size of up to 5 mm, obtained by crushing granular slags of non-ferrous metallurgy using special crushing and screening equipment.
4 TECHNICAL REQUIREMENTS
4.1 Crushed stone and slag sand of ferrous and non-ferrous metallurgy (hereinafter referred to as crushed stone and sand) must be manufactured in accordance with the requirements of this standard according to the technological documentation approved by the manufacturer.
4.2 Main parameters and dimensions
4.2.1 Crushed stone is produced in the following main fractions: from 5 (3) to 10 mm, St. 10 to 20 mm, St. 20 to 40 mm, St. 40 to 80 (70) mm and a mixture of fractions from 5 (3) to 20 mm.
4.2.2 The total residues on the control sieves when sifting crushed stone of the indicated fractions and the mixture of fractions must correspond to those indicated in Table 1, where d and D are the smallest and largest nominal grain sizes.
Table 1
Note - For crushed stone of fraction from 5 (3) to 10 mm, sieves of 2.5 and 1.25 mm are used, the total residues on which should be respectively from 95 to 100% by weight.
4.2.3 The shape of crushed stone grains is characterized by the content of lamellar (flaky) and needle-shaped grains. Crushed stone, depending on the content of lamellar and needle-shaped grains, is divided into 3 groups, which must correspond to those indicated in table 2.
table 2
4.2.4 The strength of crushed stone is characterized by a brand determined by the crushed stone crushing during compression (crushing) in a cylinder in a dry state.
Crushed stone grades must correspond to the values indicated in table 3.
Table 3
4.2.5 Frost resistance of crushed stone is characterized by the number of cycles of alternating freezing and thawing, in which the loss in percentage by weight does not exceed the values specified in Table 4.
Table 4
4.2.6 Depending on the grain size composition, sand is subdivided into groups by size. Each group of sand is characterized by the size modulus value specified in table 5.
Table 5
4.2.7 The total remainder of sand on a sieve with a mesh No. 063 should correspond to the values indicated in Table 6.
Table 6
Percentage by weight
4.2.8 The grain size composition of sand from granulated slags of nonferrous metallurgy, obtained by crushing in special crushing and screening equipment, must correspond to the values specified in Table 7.
Table 7
Table 8
In percent by weight, no more
4.3 Characteristics
4.3.1 Losses on ignition in crushed stone and sand should not exceed, in% by weight:
7 - from dump slag;
3 - from slags of the current outlet and ladle residues.
4.3.2 Crushed stone and sand should have a stable structure against silicate and sulphide degradation.
The weight loss in determining the resistance to silicate and ferruginous decomposition should not be more than 5 and 8%, respectively.
7 - in crushed stone and sand from slags of the current exit and ladle residues when determined by elutriation;
1 - in the sand from granular slags of the current output when determined by swelling;
3 - in crushed stone from dump slags when determined by elutriation;
3 - in sand from dump slags when determined by swelling.
5 - in rubble;
3 - in the sand.
4.3.7 Crushed stone and sand should not contain foreign contaminants.
4.3.8 Crushed stone and sand should be given a radiation-hygienic assessment, the results of which determine the area of its application. Crushed stone and sand, depending on the values of the specific effective activity of natural radionuclides L 3 ff [1], are used:
At L e ff up to 370 Bq / kg - in newly constructed residential and public buildings;
With L e ff st. 370 to 740 Bq / kg - in newly constructed industrial buildings and structures.
5 RULES OF ACCEPTANCE
5.1 Crushed stone and sand must be accepted by the technical control of the manufacturer.
5.2 Acceptance and delivery of crushed stone and sand is carried out in batches. A batch is considered the amount of crushed stone of one fraction (mixture of fractions), and for sand - one size module, simultaneously shipped to one consumer in one train. When shipped by road, a batch is considered the amount of crushed stone of one fraction, and for sand - one size module shipped to one consumer during the day.
5.3 To check the conformity of the quality of crushed stone and sand to the requirements of this standard, acceptance and periodic tests are carried out.
Acceptance control at the manufacturer is carried out daily by testing a combined sample of crushed stone (sand) taken from each processing line.
During acceptance tests, it is determined:
for crushed stone and sand the grain size composition, the content of dust particles, and for crushed stone and sand from dump slags also the content of clay in lumps,
5.4 During periodic tests, it is determined:
Once every 10 days - the content of metal inclusions, grain shape, loss on ignition;
Once a quarter - the stability of the structure against decay, the content of sulfur and sulfuric acid compounds, the content of sulfide sulfur, the content of manganese and iron oxides, strength, bulk density;
Once a year - frost resistance of crushed stone and the value of the specific effective activity of natural radionuclides.
The value of the specific effective activity of natural radionuclides, the stability of the structure against decay, the content of sulfur and sulfuric acid compounds and sulfide sulfur, manganese and iron oxides, strength and frost resistance are also determined every time the raw material or technology for the production of crushed stone and sand is changed.
5.5 The selection and preparation of crushed stone samples for quality control at the manufacturing plant is carried out in accordance with GOST 8269, sand - GOST 8735.
5.6 A batch of crushed stone and sand is considered accepted based on the results of acceptance and periodic tests, if the values of the indicators correspond to the requirements of this standard.
If the test results are unsatisfactory for at least one of the indicators, repeated tests are carried out for this indicator. The result of the retest is final.
5.7 The amount of crushed stone and sand supplied is determined by weight or volume.
The mass of crushed stone and sand shipped in wagons or cars is determined by weighing on railway and truck scales, shipped on ships - according to the draft of the ship.
The volume of crushed stone and sand in the vehicle is determined by measurement.
The recalculation of the amount of crushed stone and sand in a batch from units of mass to units of volume is carried out according to the value of the bulk density determined in the wet state at the time of shipment.
The volume of grain and sand at the consumer must be determined taking into account the compaction coefficient established by agreement between the manufacturer and the consumer, depending on the distance of transportation, but not more than 1.10.
5.8 Each batch of crushed stone and sand must be accompanied by a quality document, which indicates:
Manufacturer's name and address;
Number and date of issue of the document;
The name and address of the consumer;
Lot number and amount of crushed stone (sand);
Wagon number or vessel number and invoice numbers;
Grain composition (size modulus) of crushed stone (sand);
Grade by crushing and frost resistance of crushed stone;
Loss on ignition;
Stability of the structure against silicate and ferruginous decomposition;
Specific effective activity of natural radionuclides in crushed stone (sand).
6 CONTROL METHODS
6.1 The grain size composition of crushed stone, the content of dust particles, the content of clay in lumps, the shape of the grains, strength, frost resistance are determined in accordance with GOST 8269.
The grain size composition of sand, the content of lumpy clay is determined in accordance with GOST 8735, the content of dust particles in the sand by the swelling method is determined in accordance with GOST 3344.
6.3 The stability of the structure of crushed stone and sand against silicate and ferruginous decomposition is determined according to GOST 9758,
6.6 Specific effective activity of natural radionuclides in crushed stone and gravel is determined by the gamma spectrometric method in accordance with GOST 30108.
7 TRANSPORTATION AND STORAGE
7.1 Crushed stone and sand are transported in bulk in vehicles of any kind in accordance with the current rules for the carriage of goods and the technical conditions for loading and securing goods approved by the Ministry of Railways, the rules for the carriage of goods by road and water transport.
When transporting crushed stone and sand by rail, wagons should be loaded taking into account the full use of their carrying capacity.
7.2 Crushed stone is stored separately in fractions, sand - in size modulus under conditions that protect them from clogging and contamination.
At ^ jujung L (informational)
BIBLIOGRAPHY
}
