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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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.
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 sieves on GOST and a sieve with round orifices of 5mm.
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 Mixtures filtration ration will be determined in compliance with method 5 of addendum B.
Mixes sand-gravel S And of S of GOST buy in Minsk
Content of dust-like and clay particles with size of less than 0,05 mm. For its adoption voted: It is allowed not to determine the filtration ratio for sand containing grains with the size of less than 0,16 0,14 mm. Method of determination of dust-like and clay particles in mixtures. M1 and M2 — for basing at availability of proper technical-economical assessment; M3 — M11 for supplementary layers of bases.
Sedimentary rock crushed stone crushability mark grade should not be lower than The mixture plasticity grade determined on grains, with the size of less than 0,63 mm. Besides, the crushed stone and gravel contained in the mixtures do characterize water resistance index, given in the table 2.
For the bases frost-resistance layers there should be applied non-heaving or slightly swelling mixtures. The crushed stone grade on water-resistance should meet requirements given in the table 2. 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 buy in Minsk
Preparation for testing The crushed stone gravel will be washed and dried up to a constant mass, sifted through the sieve with the cell size of 5mm. Prepared for 2607 mixture is to 2567 sifted through the sieve with the orifice diameter of 20 mm. Supply will be determined on GOST Crushed stone of natural stone, gravel and crushed stone of gravel for construction works.
Test operation Each sample will be placed into a vessel with water of a room temperature so, as the water level in a vessel would be higher of the grain surface, which is not below of 2 cm. Determination of specific effective activity of natural radionuclides.
After that there will be selected two analytical samples with mass indicated in Table B. Vessel for material saturation with water.
Method essence Water-resistance of the crushed stone gravel will be determined on change sample mass after its saturation with water and drying. Crushed stone-sand, gravel-sand and crushed stone-gravel-sand mixtures further — finished mixtures and crushed stone are to be produced in compliance with requirements of the present standard on technological schedule approved by a manufacturer. Methods of laboratory determination of physical properties.
Use of the crushed stone of two or more rock kinds in the mixtures is assumed.
Sand for construction works. Mixture grain compound will be determined on GOST by sizing of dried up to fixed 5. Method of laboratory determination of swelling degree. The crushed stone and gravel contained in the mixtures, on the solidity, frost-resistance and decay stability of the crushed gist structure should meet requirements of GOST and 3. The crushed stone plasticity grade should meet requirements given in the table 1.
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 The sedimentary rock crushed stone crushability grade is to be determined in a water-saturated condition. Determination of the mixtures filtration ratio 5. 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: Content of dust-like, clay particles and lumpy clay in mixtures will be determined in compliance with addendum B.
Kondrusev on July, 10 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 control check of the crushed stone and mixture quality the Customer is to apply order of sampling from hauling units, stipulated in GOST On the manufacturer and customer agreement there can be used the sand-gravel mixtures of the indicated grain compound.
Heavy and fine concrete. Mixture filtration coefficient ratio for supplementary layers should be not less than: At transportation of mixtures to a construction site an intermediate material handling is not allowed.