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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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.
It is allowed to use in the crushed stone mixtures two or more kinds of rocks. Method of maximal density determination in the laboratory.
RG24 GOST R TR CU, Import export regulations in English
Sand for construction works. Besides, the igneous and metamorphic rock crushed stone grade on crushability is equal to and lower, the sedimentary rock 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. Kondrusev on July, 10 Water-resistance grade will be established in compliance with 3. At transportation of mixtures to a construction site an intermediate material handling is not allowed.
Method of determination of dust-like and clay particles in mixtures.
The samples will be placed into split forms and godt by layer tamping method up to maximal density at optimum moisture content, in compliance with GOST Determination of water-resistance 4.
Construction materials and items. In the absence of geological exploration data 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 It is allowed to use the sieves of the size 70 gsot 0,14 mm.
Test points for preliminary radiation-hygienic evaluation of rock and class of the crushed stone and gravel will be selected on GOST Prepared for testing mixture is to be sifted through the sieve with the orifice diameter of 20 mm.
Swelling degree of mixture used for arrangement of gkst layers will be determined on GOST Mixture filtration coefficient ratio for supplementary layers should be not less than: At acceptance control of the crushed stone and vost there will be established: Method of laboratory determination of swelling degree.
Mixes sand-crushed-stone S-3 And of S-4 of GOST buy in Minsk
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: The crushed stone structural resistance against silicate and ferrous decay will be determined on GOST Then, mixture will be sifted though the sieve with the orifices of 5 mm.
Specific effective activity of natural radionuclides in the crushed stone and mixtures will be determined by gamma-spectrometric method on GOST For inspection of the crushed stone and mixture quality conformity with the present standard there will be conducted an acceptance control and periodic tests.
Vessel for material saturation with water. Table 1 Plasticity grade Pl1 Pl 2 Pl 3 Plasticity index Up to1 inclusively More than 1 to 5 More than 5 to 7 The crushed stone of higher crushability grade than ones indicated in 3. At shipment to a customer each glst of the crushed stone and mixtures will be accompanied by documents on quality, in which there will be specified: At that content goat lumpy clay from percentage total mass of the dust-like and clay particles in the finished mixtures should not exceed: Common purpose and exemplary laboratory scales.
Method of determination of a lumpy clay content in mixtures Content of lumpy clay will be determined by particle analytical sample selection, differing on viscosity. The crushed stone plasticity grade should meet requirements gosr in the table 1. The sand mesh analysis is to be prepared graphically as a sieving curve built in a semi-logarithmic scale.
Mixes sand-crushed-stone S-3 And of S-4 of GOST 25607-94
The crushed stone and gravel are to be accepted and delivered in lots. Methods of laboratory determination gos physical properties. The crushed stone and gravel contained in the mixtures, on the solidity, frost-resistance and decay stability of the crushed stone structure should meet requirements of GOST and 3.
Sedimentary rock crushed goost crushability mark grade should not be lower than Plasticity grade will be established according to 3.
Determination of specific effective activity of natural radionuclides.