Triaxial Test Study on Relations Between Pore Pressure and Strain in Aerated Fine-Grained Soil

CHEN Huan'ai; JING Fengwei; LIU Zhaowang; CHEN Kaifei; JIANG Yaochen

doi:10.13204/j.gyjzG21122601

Volume 53 Issue 3

Mar. 2023

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CHEN Huan'ai, JING Fengwei, LIU Zhaowang, CHEN Kaifei, JIANG Yaochen. Triaxial Test Study on Relations Between Pore Pressure and Strain in Aerated Fine-Grained Soil[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(3): 197-200,95. doi: 10.13204/j.gyjzG21122601

Citation:

CHEN Huan'ai, JING Fengwei, LIU Zhaowang, CHEN Kaifei, JIANG Yaochen. Triaxial Test Study on Relations Between Pore Pressure and Strain in Aerated Fine-Grained Soil[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(3): 197-200,95. doi: 10.13204/j.gyjzG21122601

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Triaxial Test Study on Relations Between Pore Pressure and Strain in Aerated Fine-Grained Soil

doi: 10.13204/j.gyjzG21122601

1. Zhejiang Communications Construction Group Co., Ltd., Hangzhou 310051, China;
2. College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310023, China

Received Date: 2021-12-26

Abstract

Abstract

A series of undrained shear tests with different effective confining pressures were conducted to study the effect of the gas content on pore pressure variation and strain isolines of remolded fine aerated soil based on the microporous adsorption properties of zeolite. Before the axial strain reached 5%, the pore pressure of saturated soil developed faster than that of aerated fine-grained soil, while the axial strain exceeded 5%, the pore pressure of aerated soil developed faster than that of saturated soil. In the same strain, the pore pressure in aerated soil was larger and the corresponding shear strength was smaller. In different contents of gas, the slope of the critical state line was a constant, it was 1.25. The strain isolines along the effective stress paths of soil with different contents of gas under different confining pressures could be regarded as straight lines, and their slopes increased gradually with the increase of strains and finally coincided with the critical state lines.
- aerated soil,
- fine-grained soil,
- air content,
- pore pressure,
- stress path

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References

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