new sand making machine in railway project construction

use new sand of railway engineering construction

sands is a popular building material in concrete masonry are an essential piece of the fine aggregate. Sand quality and price effects on construction quality and cost is very important, as for the sand shortage area, effects are particularly important. In the construction of railway projects, both as a porous fillers, or directly used in roadbed, bridges and culverts, tunnels, buildings and other buildings and structures in masonry, sand amount is very big.

in railway surveying in mountainous areas, often encounter the lack of local natural sand stone is rich in resources. In this case, you might consider using hard rock by blasting and mechanical rolling, made of a certain particle size distribution of sand to replace natural sand used in concrete masonry.

particle shape and particle size distribution of sand and dust content, technical indicators, affecting railway concrete workability, strength, resistance to shrinkage and abrasion resistance properties.

(1) particle shape

because the sand is formed by the stone rolling, its surface is rough, irregular shape, mostly for ARRIS angular particles or plate-shaped particles. Different grain shape of greater influence on the workability of concrete with artificial-sand, mixing poor workability of plate-shaped particles, particles of the ideal shape is similar to the cube.

(2) content stone powder

powder is a powder of less than 0.08mm. When mixing the concrete and sand making machine equipment containing the right amount of powder, not only improves the strength of concrete, can also improve the workability of concrete, general control of machine-made sand stone at 7% or less is appropriate.

(3) particle size distribution

sand particle size gradation is bad, the workability of the mix is poor, ease of segregation and, therefore, should be restricted more than 5mm of machine-made sand concrete particles does not exceed 20%. The railway code for construction and acceptance of concrete and masonry expressly provided for this.

launch of 5X sand and sand of railway engineering construction equipment is the latest model, which brings together the PCL sand making machine and VSI sand making machine the advantages of, and set three broken patterns in one. 5X new business sand machine used currently international Shang wear resistance corrosion resistance high temperature performance best of quality material made, strong durable; high mass alloy pouring and into of diamond combined impact block, can swap turns using, both improve has utilization, save has production cost, and effective to protection has within week Nursing Board of life; optimization design of deep cavity type rotor, most reasonable of launches mouth, and internal smooth of curve shaped design, can reduced material of flow resistance, substantially improve material of through rate, increased production efficiency; combined hammerhead design, Just replace worn hammer is simple and reduces costs.