One-dimensional compression model for solidified silt based on theory of disturbed state concept
RAO Chun-yi1, 2, ZHU Jian-feng1, PAN Bin-jie1, LIU Hao-xu1, ZHOU Zhi-jun3
1. Faculty of Architectutal Civil Environment, Ningbo University, Ningbo 315211, China; 2. Jiaochuan Street Office of the People's Government of Zhenhai District, Ningbo 315211, China; 3. School of Civil Engineering and Architecture, Wuyi University, Jiangmen 529020, China
Abstract：The low-carbon, environmental-friendly magnesia cement is used to solidify the silt, and the compression characteristics of the solidified silt at different ages are investigated based on the one-dimensional compression tests. A series of one-dimensional compression tests on the magnesia cement-cured silt under different curing ages are carried out using a new ring knife sample preparation method. It is found that there exists an obvious inflection point, structural yield stress, on the ln(1+e)-lgσ¢v curve, which is similar to structural soils. Moreover, the structural yield stress of the solidified silt increases gradually with the increase of the curing age. Furthermore, an one-dimensional compression model to characterize the strengthening and weakening properties coexisted in the magnesia cement-solidified silt is proposed based on the concept of disturbed state. The experimental results show that the proposed model can reproduce well the one-dimensional compression characteristics of the solidified silt at any age.
饶春义, 朱剑锋, 潘斌杰, 刘浩旭, 周志军. 基于扰动状态概念理论的固化淤泥一维压缩模型[J]. 岩土工程学报, 2019, 41(S1): 173-176.
RAO Chun-yi, ZHU Jian-feng, PAN Bin-jie, LIU Hao-xu, ZHOU Zhi-jun. One-dimensional compression model for solidified silt based on theory of disturbed state concept. Chinese J. Geot. Eng., 2019, 41(S1): 173-176.
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