Parameters for quality testing of CDM mixture are also proposed in the paper on the basis of the statistical analyses of test results of the soil-cement mass in both onshore and offshore CDM works.

The hydrodynamics characteristics of air-anthraquinone working solution-water three-phase system used for the production of hydrogen peroxide were investigated in a gas-agitated sieve plate extraction column.

Deepmixing method has been used widely in our country as a way of softsoil treatment, but during the course of construction, the strength of the pile shaft is usually influenced because of the problems such as the mixed materal s returning to surface, the homogeneous degree of soilmixing, additives and or soon.

The effect of the ultrasonic stirring and gas stirring on the removal of inclusion was studied by the water modeling experiment under the condition of same unit stirring power in a container.

From the results of the strength of cement mixings at various ages of several actual project cases,it showed that there is a certain regularity of the strength at various ages of cement-soil mixture though having a significant discreteness in the strength of cement-soil mixture.