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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Prepared for testing mixture is to be sifted through the sieve with the orifice diameter of 20 mm. Quantity gowt the supplied crushed stone or mixtures will be determined on amount or mass, in compliance with requirements of GOST Requirements to the rocks crushed stone for covering and basing on wedging method.
25670 At shipment to a customer each batch of the crushed stone and mixtures will be accompanied by documents on quality, in which there will be specified: The rest mixtures are regarded as known suitable ones for frost-protective layers. 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 Specific effective activity of natural radionuclides in the crushed stone and mixtures will be determined by gamma-spectrometric method on GOST Crushed stone of natural stone, 25067 and crushed stone of gravel 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 got do characterize the plasticity and water resistance indexes. In the absence of geological exploration data on radiation-hygienic evaluation of the field and report on ogst 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 Besides, the crushed stone and gravel contained in the mixtures ogst characterize water resistance index, given in the table 2.
Plasticity rate determination Rate of plasticity will be determined as humidity indexes. The sieves on GOST and a sieve with round orifices of 5mm. Lot is an amount of the crushed stone of one cut or gosh mixtures or mixtures, stipulated in the supply agreement and at one time shipped to one of the customers by railroad car or vessel. Belonging to the mixture compound.
Content of dust-like and clay particles with size of less than 0,05 mm. Determination of the mixtures filtration ratio 5.
At transportation by railroad transport there are to gosg fulfilled requirements of the loads lading and fastening Specifications approved by Communications Ministry. Determination of specific effective activity of natural radionuclides. M1 and M2 — for basing at availability of proper technical-economical assessment; M3 — M11 for supplementary layers of bases. 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.
M4-M6 and M9-M10 for stabilization of motor road waysides 2.
Mix crushed-stone-sand, fraktsiya mm, GOST buy in Mikashevichi
It is allowed not to determine the filtration ratio for sand containing grains with the size of less than 0,16 0,14 mm. Solid rock crushed stone and gravel for construction works. Test points for preliminary radiation-hygienic evaluation of rock and class of the crushed stone and gravel will be selected on GOST After that there will be selected two analytical samples with mass indicated in Table B. Heavy and fine concrete. Method of filtration ratio laboratory determination.
Kondrusev on July, 10 Mixture grain compound will be determined on GOST by sizing of dried up to fixed 5. Sedimentary rock crushed stone crushability mark grade should not be lower than The crushed stone on its grain compound, solidity, frost-resistance, content of laminar hearth and prickly form grains, dust-like and clay particles content, lumpy clay and content of the crushed grains in the gravel crushed stone, structural decay resistance of the crushed stone is to meet requirements of GOST At shipment and storage of the crushed stone and mixtures in winter period a manufacturer has to undertake measures on their freezing shoveling, treatment by special solutions and etc.
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 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: Slag crushed stone and sand for road construction. Sizing of mixtures will be carried out with use of two safety sieves with the cell size of 1,25 and 0,63 mm.
Wire woven grids with square cells.
On the sieving curve there will be graphically determined effective size of 5. Use of the crushed stone of two or more rock kinds in the mixtures is assumed. Determination of water-resistance 4.
Mix crushed-stone-sand, fraktsiya:0-20 mm, GOST 25607-94
Mixtures filtration ration will be determined in compliance with method 5 of addendum B. The crushed stone and gravel will be stored separately, on cut and mixtures — on numbers, guarding against bost mixing and contamination. A manufacturer will determine and inform a customer of the crushed stone, gravel and finished mixtures bulk density. Determination of swelling degree will be carried out in compliance with GOST Construction materials and items.