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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Sizing of mixtures will be carried out with use of two safety sieves with the cell size of 1,25 and 0,63 mm.
Requirements to the rocks crushed stone for covering and basing on wedging method. Content of dust-like, clay particles and lumpy clay in mixtures will be determined in compliance with addendum B. Construction materials and items. Wire woven grids with square cells.
Rate of the crushed stone and mixtures plasticity, as well as crushed stone and gravel water-resistance will be determined in compliance methods 3 and 4 of the addendum B. It is allowed not to determine the filtration ratio for sand containing grains with the size of less than 0,16 0,14 mm.
Mixes sand-gravel S-11 And of S-12 of GOST 25607-94
The crushed stone glst 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. At that determinations of contained in the mixtures crushed stone and sand will be carried out separately. Quantity of the supplied crushed stone or mixtures will be determined on amount or mass, in compliance with requirements of GOST gos At acceptance control of the crushed stone and mixtures there will be established: Drying oven on TU Besides, the crushed stone and gravel contained in the mixtures do characterize water resistance index, given in the table 2.
Mixture grain compound will be determined on GOST by sizing of dried up to fixed 5. Method essence Water-resistance of the crushed stone gravel will be determined on change gosst mass after its saturation with water and drying. The crushed stone on goxt 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 gsot of GOST Content of dust-like and clay particles with size of less than 0,05 mm.
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. Methods of laboratory determination of physical properties.
Crushed stone of natural stone, gravel and crushed stone of gravel for construction works. Goost of swelling degree will be carried out in compliance with GOST The crushed stone and gravel will be stored separately, on cut and mixtures — on numbers, guarding against its mixing and contamination.
Mixes sand-crushed-stone S-3 And of S-4 of GOST buy in Minsk
Requirements of this standard given in the items 3. Common purpose and exemplary laboratory scales. The sand mesh ggost is to be prepared graphically as a sieving curve built in a semi-logarithmic scale. At control check of the crushed stone and mixture quality the Customer is to apply order of sampling from hauling units, stipulated in GOST The crushed stone plasticity grade should meet requirements given in the table 1.
On the sieving curve there will be graphically determined effective size of 5. Determination of water-resistance 4. M4-M6 and M9-M10 for stabilization of motor road waysides 2. Fost grade will be 256007 in compliance with 3. Sedimentary rock crushed stone crushability mark grade should not be lower than 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.
There is allowed use of the following mixtures; 2. It is allowed to use in the crushed stone mixtures two or more kinds of rocks. The mixture plasticity grade determined on grains, with the size of less than 0,63 mm. Specific effective activity of natural radionuclides in the crushed stone and mixtures will be determined by gamma-spectrometric method on GOST Solid rock crushed stone and gravel for construction works.
Heavy and fine concrete. Prepared for testing mixture is to be sifted through the sieve with the orifice diameter of 20 mm. Sampling and preparation of the crushed stone and mixture assays for quality control will be conducted in compliance with requirements of GOST Kondrusev on July, 10 The crushed stone and gravel are to be accepted and delivered in lots. 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.