GOST 25607 PDF

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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Requirements of this standard given in the items 3. 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. After that there will be selected two analytical samples with mass indicated in Table B.

The crushed stone grade on water-resistance should meet requirements given in the table 2. Kondrusev on July, 10 fost, 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.

The crushed stone and gravel are to be accepted and delivered in lots.

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Crushed stone of natural stone, gravel and crushed stone of gravel for construction works. Mixtures filtration ration will gosh determined in compliance with method 5 of addendum B. It is allowed to supplement lack of particles with the size of less than 0,05 mm. Prepared for testing mixture is to be sifted through the 256007 with the orifice diameter of 20 mm. Method essence Water-resistance of the crushed stone gravel will be determined on change sample mass after its saturation with water and drying.

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Content of dust-like, clay particles and lumpy clay in mixtures will be determined in compliance with addendum B. Belonging to the mixture compound.

RG24 Russia GOST R regulations are now available in English!

For inspection of the crushed stone and mixture quality conformity with the present standard there will be conducted an acceptance control and periodic tests. At that determinations of contained in the mixtures crushed stone and sand will be carried out gosf. Method essence Content of dust-like and clay particles particles with size of less than 0,05 mm.

Test operation Each sample will be placed into a vessel with water of a room temperature so, as the water level in a got would be higher of the grain surface, which is not below of 2 cm. It is allowed to use in the crushed stone mixtures two or more kinds of rocks.

Methods of laboratory determination of physical properties.

Mixes sand-crushed-stone S-3 And of S-4 of GOST buy in Minsk

Test points for preliminary gostt evaluation of rock and class of the crushed stone and gravel will be selected on GOST Then, mixture will be sifted though the sieve with the orifices of 5 mm.

Determination of specific effective 2507 of natural radionuclides. The sedimentary rock crushed stone crushability grade is to be determined in a water-saturated condition. Quantity of the supplied crushed stone or mixtures will be determined on amount or mass, in compliance with requirements of GOST On the sieving curve there will be graphically determined effective size of 5.

Water-resistance grade will be established in compliance with 3. The mixture plasticity grade determined on grains, with the size of less than 0,63 mm. Method of filtration ratio laboratory determination. Samples will be soaked in water within 48 hours, after which the grains will be washed on the sieve with the cell size of 5 mm. The crushed stone structural resistance against silicate and ferrous decay will be determined on GOST Swelling degree is characterized by relative deformation of the mixture frost swelling, which should make up not less than 0, Mixture grain compound will be determined on GOST by sizing of dried up to fixed 5.

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Lot is an amount of the crushed stone tost 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. 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.

It is allowed to use the sieves of the size 70 and 0,14 mm. The crushed stone on its grain compound, solidity, frost-resistance, content of got 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 Gist Plasticity grade will be established according to 3.

Solid rock crushed stone and gravel for construction works. M4-M6 and M9-M10 for stabilization of motor road waysides 2.