%0 Journal Article
%A LI Xue-mei
%A YANG Min
%A LI Wei-chao
%A SHANGGUAN Shi-qing
%A WAN Jia-cheng
%T Correlations between Deformation Indexes and Initial Void Ratio of Soft Clay
%D 2022
%R 10.11988/ckyyb.20201268
%J Journal of Changjiang River Scientific Research Institute
%P 104-110
%V 39
%N 3
%X One-dimensional and isotropic consolidation tests were carried out on clay of varied depth in Shanghai to acquire the compression index <i>C</i><sub>c</sub> and the rebound index <i>C</i><sub>s</sub> and their relations with parameters parameters <i>λ</i> and <i>κ </i>in the modified Cambridge model. However, laboratory tests are time-consuming and expensive. Empirical relations need to be developed to predict compression index using physical indices (especially natural water content <i>w</i><sub>n</sub>, initial void ratio <i>e</i><sub>0</sub>, liquid limit <i>w</i><sub>L</sub> and plastic index <i>I</i><sub>p</sub>) of soil which are relatively easier to obtain. Highly linear relations between <i>C</i><sub>c</sub>/<i>n</i><sub>0</sub> and <i>C</i><sub>c</sub> as well as <i>C</i>′<sub>s</sub>/<i>n</i><sub>0</sub> and <i>C</i>′<sub>s</sub> were found, and corresponding relational expressions were established. Hence, the deformation index of soft soil in Shanghai can be estimated by void ratio. In addition, according to test data of soft soil in coastal areas in China, including Guangzhou, Tianjin, Shenzhen, Wenzhou, and Fuzhou, an empirical function between <i>C</i><sub>c</sub>/<i>n</i><sub>0</sub> and <i>C</i><sub>c</sub> was constructed to predict compression index of soft soil in some coastal areas in China (Guangzhou, Tianjin, Shenzhen, Wenzhou, and Fuzhou) for preliminary engineering design.
%U http://ckyyb.crsri.cn/EN/10.11988/ckyyb.20201268