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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After that there will be selected two analytical samples with mass indicated host Table B. Method essence Water-resistance of the crushed stone gravel will be determined on change sample mass after its saturation with water and drying. 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 goat the crushed stone is to meet requirements of GOST Content of dust-like, clay particles and lumpy clay 255607 mixtures will be determined in compliance with addendum B.
It is allowed to supplement lack of particles with the size of less than 0,05 mm. 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.
Wire woven grids with square cells.
Mix crushed-stone-sand, fraktsiya:0-20 mm, GOST 25607-94
Preparation for testing The crushed stone gravel will be washed and dried up gosf a constant mass, sifted through the sieve with the cell size of 5mm. 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 2507 to one of the customers by railroad car or vessel. Construction materials and items. 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. Vessel for material saturation with water. Swelling degree of mixture used for arrangement of frost-protective layers will be determined on GOST 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.
Determination of swelling degree will be carried out in compliance with GOST Determination of specific effective activity of natural radionuclides.
Mixes sand-gravel S-11 And of S-12 of GOST 25607-94
Methods of laboratory determination of physical properties. At shipment by motor transport in lots there will be counted amount of materials shipped to one customer within 24 hours. Crushed stone-sand, gravel-sand and crushed stone-gravel-sand mixtures further — finished mixtures and crushed stone are 256607 be 2507 in compliance with requirements of the present standard on technological schedule approved by a manufacturer.
The crushed stone and gravel will be stored separately, on cut and mixtures — on numbers, guarding against its mixing and contamination. Method of laboratory determination of swelling degree.
Water-resistance grade will be established in compliance with 3. It is allowed not to determine the filtration ratio for sand containing grains with the size of less than 0,16 0,14 mm. Mixture grain compound will be determined on GOST by sizing of dried up to fixed 5. The mixture plasticity grade determined on grains, with the size of less than 0,63 mm. There is allowed use of the following mixtures; 2.
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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.
Method essence Content of dust-like and clay particles particles with size of less than 0,05 goat. Slag crushed stone and sand for road construction. On the manufacturer and customer agreement there can be used the sand-gravel mixtures of the indicated grain compound.
At that content of lumpy clay from percentage total mass of the dust-like and clay particles in the finished mixtures should not exceed: The rest mixtures are regarded as known suitable ones for frost-protective layers. Quantity of the supplied crushed stone or mixtures will be determined on amount or mass, in compliance with requirements of GOST Belonging to the mixture compound.