Based on the experiment on the separation of stones with a specific gravity combine stoner, series of practical indexes of technological function and parameters of technical structure were obtained, which showed that such kind of machine was highly effective in separating stones and clods in large productivity.

On the application of cement pad in the install of steam turbine;

Considering low expense and high performance, the design and the realization of maintaining and monitoring system of cement test block has been discussed.

Inspecting defects in cement testing blocks using ultrasonic transmitting method;