Introduction Of Stone Granularity In Road Paving

The forest of stone used in road works mainly gravel and sand

. Stone washing machine manufacturer aggregates a variety of concrete aggregate, in general, called gravel, 2 --- 0 .074 mm side of the particle size of more than 2mm of sand.

Actual production, the grain size curve in addition to the size composition reflects the gravel products, sand washing machine manufacturers can also compare different stone crushing degree of difficulty, the effect of crusher broken.

A. Sand

Sand cement mortar, the cement stick concrete, asphalt concrete and tar sands, the main raw material. M of sand to have a natural sand (sand mountain, river sand, sea sand) and artificial sand (sand) are two. The lower cost of natural sand of the sand washing machine manufacturer can make the best, so use more artificial sand of high quality, less by the natural conditions, has been more widely used.

The classification of the sand the following several methods:

1) coarse granular classification, this classification method based on sand W Granule classification can look-up table to determine the coarseness of the sand> 1.

2) According to the fineness modulus. This classification is according to the granularity in the sand.

B. Gravel

Road building in the gravel is very versatile and it can be used alone, sand washing machine manufacturers as a high-grade highways primary or low-grade road surface, can also be used as cement, asphalt concrete coarse aggregate for high-grade The pavement of the road. Road a little project gravel generally refers to a particle size between 5}-75rnran gravel products, the thickness of the gravel, the size of the particle size classification, such as "15 '25rmm gravel", "25,33 m rm gravel and so on. Cement concrete and asphalt concrete pavement with gravel granularity for more than 35 m of coarse gravel used for the basis of the road. Stone washing machine manufacturers used to do the asphalt penetration pavement surface. Table 1-4 reflect the asphalt penetration pavement material specifications, and usage.

Artificial sand washer : http://www.hxjqcrusher.com/Sand-maker.html

Jaw crusher : http://www.hxjq-crushers.com/1.htm

by: hxjqchina

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