Consolidated Undrained Triaxial Compression Tests and Strength Criterion of Solidified Dredged Materials

Autor: Jianwen Ding, Xusong Feng, Yupeng Cao, Sen Qian, Feng Ji
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Advances in Civil Engineering, Vol 2018 (2018)
Druh dokumentu: article
ISSN: 1687-8086
1687-8094
DOI: 10.1155/2018/9130835
Popis: Consolidated undrained triaxial compression tests were performed to investigate the shear strength behavior of the solidified dredged materials (SDM). The variation law of deviator stress and excess pore water pressure with the increase of the applied confining pressure was investigated. It is found that the shear strength envelope is consisted of two lines, and there exists a transitional stress on the intersection point. The undrained shear strength develops slightly with the increase of applied normal stress in the preyield state. However, the undrained shear strength increases significantly in the postyield state, and the strength envelope is nearly a straight line with the extension through the origin. Based on the triaxial test data and the binary medium model, a strength criterion considering strength evolution mechanism is proposed and the relevant parameters of the strength criterion were discussed. Comparisons of the predicted results and experimental data demonstrate that the proposed strength criterion can properly describe the strength evolution rules of the SDM.
Databáze: Directory of Open Access Journals
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