Gravel

Gravel is a kind of granular and non - viscous material.
At present, the domestic highway construction, the natural sandy gravel or graded sand gravel used usually way is: gravel stone in a certain grading, then adding a small amount of binding material (such as cement or two ash), to form the mixture as road base, with natural sandy gravel as road base layer.
In the application of road engineering, gravel material is widely distributed and the intensity of single particle is large.