Investigation on Test and Mechanism of Specific Surface Area of Soft Clay
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Abstract
Soft clay is mainly composed of tiny-particle. Its physical and mechanical properties are closely related to specific surface area (SSA for short). Therefore, SSA test of soft clay is helpful for analyzing its physical and mechanical properties. EGME method and BET method are adopted to carry tests on bentonite, kaolinite, quartz, feldspar and their mixtures, Shenzhen soil and Kuwait soil. The results show that the mineral type has great influence on SSA; the SSA of Shenzhen soil is smaller than Kuwait soil; total and external SSA of samples can be measured respectively by EGME and BET method. The SSA tests in this paper possess great reference significance for understanding of physical mechanism that influences the physical and mechanical properties in soft clay.
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