Effect of Bound Water Content on Secondary Compression of Three Marine Silty Clays

Secondary compression studies can provide insights for evaluating the engineering potential and environmental impact of soil. The objective this research was to investigate effect bound water content on secondary marine silty clay. To end, a novel method established based thermogravimetric analysis (TGA) determine contents limits strongly weakly three typical clays including Tianjin mucky clay (TJ), Qingdao (QD), Weihai (WH). A total 17 groups uniaxial confined tests were performed reconstituted samples at different absolute under condition multistage loading their characteristics. results show that initial dehydration temperature (Ts) corresponds peak derivative thermogravimetry (DTG) curve. values Ts TJ, QD WH are 112.35 °C, 109.67 °C 118.46 respectively. temperatures (Tw) 55.26 52.56 56.56 coefficient Cα changes little before limit increases dramatically as same vertical stress. piecewise linear model quadratic polynomial calculating average from content. Weakly is determining factor controlling compression. Increasing weakens connection force friction among particles viscosity water. will guide decisions long-term settlement assessment facilitate understanding mechanism affected by