It introduces all coefficients of having influences on the sand ratio and influencing trend,analyzes basic principle of confirming sand ratio,concludes basic procedures of confirming reasonable sand ratio,and points out that reasonable checking standard of the sand ratio is using minimum sand ratio to get good construction and operation performance.

And from the road-users point of view and through the replacement thinking method, a proper tariff deciding model is proposed on a basis of thorough analysis to the theory and practice of the road tolls in our nation.

Research on sand ratio of modified asphalt mixture;

Effect of sand ratio on the function of steel ingot milling type steel fibers concrete;

Impact of formation way and sand ratio to the pervious concrete performance

Effects of sand percentage on plastic shrinkage cracking of concrete;

The study of the influence of sand percentage on the workability and strength of concrete;

Influence of cementitious materials and sand percentage on High performace Self-Condense Concrete;

this paper has studied,the effect of fly-ash content and sand rate on strength and resistance permeating of CL-in CSO concrete.

This paper studies how the concrete can be pumped easily,putting forward that the reasonable sand rate should be parameter with coarse aggregate grain and cement quantity,and then gave reasonable sand rate scope of pumping concrete which has been proved reasonable and practical in theory and practice.

The influence of aggregate,which distinguish from the maximum dimension,the aggregate grading,different content of needle or plate to sand rate under different B and W/B ,has been investigated in this article.