Gost 1. GOST Rock products used for crushed stone and gravel road bases and surfacing. Specifications ГОСТ Crushed stone, gravel, and sand mixes for road and airfield surfaces and beds. Specifications Смеси щебеночно-гравийно-песчаные для покрытий и. GOST 94, Russian GOST Standards In English.
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Mixes sand-gravel S-11 And of S-12 of GOST 25607-94
goat Besides, the igneous and metamorphic rock crushed stone grade on crushability is equal to and lower, the sedimentary gosst crushed stones grade does make up and lower, the gravel crushed stone grade is equal to and lower values do characterize the plasticity and water resistance indexes. Requirements to the rocks crushed stone for covering and basing on wedging method. At acceptance control of the crushed stone and mixtures there will be established: Quantity of the supplied crushed stone or mixtures will be determined on amount or mass, in compliance with godt of GOST Methods of laboratory determination of physical properties.
Content of dust-like, clay particles and lumpy clay in mixtures will be determined in compliance with addendum B. At shipment by motor transport in lots there will be counted amount of materials shipped to one customer within 24 hours. M1 and M2 — for basing at availability of proper technical-economical assessment; M3 — M11 for supplementary layers of bases.
In the absence of geological exploration bost on radiation-hygienic evaluation of the field and report on the crushed stone and mixtures report, the manufacturer will previously evaluate the mined rock areas directly in quarries or finished products warehouse, in compliance with GOST Method essence Water-resistance of the crushed stone gravel will be determined on change sample mass after its saturation with water and drying.
Preparation for testing The crushed gsot gravel will be washed and dried up to a constant mass, sifted through the sieve with the cell size of 5mm.
RG24 GOST R TR CU, Import export regulations in English
This standard 2567 also applied to aggregates for heavy and fine concrete, fillers for asphalt mixtures, to finished mixtures for bases and coverings treated with non-organic and organic binding materials. Sampling and preparation of the crushed stone and mixture assays for quality control will be conducted in compliance with requirements of GOST Test points for preliminary radiation-hygienic evaluation of rock and class of the gos stone and gravel will be selected on GOST On the manufacturer and customer agreement there can be used the sand-gravel mixtures of the indicated grain compound.
Preparation of samples to testing Mixture will be dried up to a constant mass and selected two laboratory samples with mass of not less than 5,0 KG. The crushed stone, gravel and mixtures are divided into classes depending on total specific effective activity value of natural radionuclides Aeff are subdivided and applied: Determination of swelling degree will be carried out in compliance with GOST The samples will be placed into split forms and densified by layer tamping method up to maximal density at optimum moisture content, in compliance with GOST The crushed stone structural resistance against silicate and ferrous decay will be determined on GOST Determination of the mixtures filtration ratio 5.
For the bases frost-resistance layers there should be applied non-heaving or slightly swelling mixtures. Plasticity rate determination Rate of plasticity will be determined as humidity indexes. Construction materials and items.
The crushed stone plasticity grade should meet requirements given in the table 1. Solid rock crushed stone and gravel for construction works. The rest mixtures are regarded as known suitable ones for frost-protective layers. Swelling degree of mixture used for arrangement of frost-protective layers will be determined on GOST Slag crushed stone and sand for road construction.
The sand mesh analysis is to be prepared graphically as a sieving curve built in a semi-logarithmic scale. It is allowed to supplement lack of particles with the size of less than 0,05 mm. The crushed stone used as a self-contained material, as well as the crushed stone and gravel contained in mixtures are to be tested on GOST At transportation by railroad transport there are to be fulfilled requirements of the loads lading and fastening Specifications approved by Communications Ministry.
Determination of specific effective activity of natural radionuclides. For its adoption voted: The sieves on GOST and a sieve with round orifices of 5mm. Crushed stone of natural stone, gravel and crushed stone of gravel for construction works. Samples will be soaked in water within 48 hours, after which the grains will be washed on the sieve with the cell size of 5 mm. Common purpose and exemplary laboratory scales. Lot is an amount of the crushed stone of one cut or cut mixtures or mixtures, stipulated in the supply agreement and at one time shipped to one of the customers by railroad car or vessel.
Besides, the crushed stone and gravel contained in the mixtures do characterize water resistance index, given in the table 2.
At transportation of mixtures to a construction site an intermediate material gosf is not allowed.
The crushed stone and gravel are to be accepted and delivered in lots. It is allowed not to determine the filtration ratio for sand containing grains with the size of less than 0,16 0,14 mm.