Research on Dispersive Discrimination Test Methods of Illite Clay Soils in Zhejiang

摘要

Numerous studies indicate that dispersive clay minerals are mostly composed of montmorillonite, while the major mineral composition of dispersive clay is illite in Zhejiang Province. Based on the particularity of dispersive clay soil in this region, A series of experimental study and comparison and analysis work have been done to make test methods and discrimination results of the crumb test, the pinhole test, the double-hydrometer test and the pore water soluble salt test are more closed with engineering practice. The test methods were improved, and the discrimination standard of the double-hydrometer test was modified. For different test methods have different mechanisms, the dispersion of soil cannot be comprehensively distinguished by single one test, so, the synthetic discrimination method was proposed to judge the dispersion of clay accurately. The experimental results provide a theoretical basis and technical guidance for soil choice in related engineering projects.