The formula of optimum gravel content is deduced from theory.

Optimum moisture content of rapeseed for ultradry storage at different temperature;

Using the regress analysis method and the numerical analysis method to obtain the extremum of the compaction test,we may accurately extract the biggest dry density and the optimum moisture content.

The density is one of main control performances for projects during the highway construction, optimum moisture content and maximum dry density among them are keys for calculating and controlling the density.

Effect of vibrating compaction method on the optimum water content and dry density for the cement-stabilized crushed rock mixtures;

Influential factors of maximum dry unit weight and optimum water content of lime-flyash concrete;

This paper starting from the characters of the "rubber soil",basing on overall-analyzing the mechanism of production of rubber soil and by means of corresponding compaction tests,emphasis on researching the optimum water content and the maximum dry density of the clay in the progress of compaction,and discussing prophylactic-therapeutic measures of it.