Development and Preliminary Application of an Improved Testing Device for Consolidation and Permeability of Gassy Soils

Soil Engineering and Foundation ›› 2019, Vol. 33 ›› Issue (6): 709-712.

Development and Preliminary Application of an Improved Testing Device for Consolidation and Permeability of Gassy Soils

A gassy marine soils usually demonstrate poor engineering properties. The conventional consolidation test device was improved so that it can conduct the consolidation and permeability of gassy marine soils. The improved device can separate the pore water and gas during the testing. The air and water tightness inside the ring and the friction between the piston and the ring are also effectively improved. This paper also presents the results on the gassy soil testing using the improved device. The results are gas content in the soil, preconsolidation pressure, compressibility and coefficient of permeability. The tested parameters are consistent with the soft soil performance and the reliability of the improved device is also verified.

(1.School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070;
2.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, 430071)

Received:2019-02-25 Revised:2019-03-12 Online:2019-12-28 Published:2019-12-28

Abstract

Abstract: A gassy marine soils usually demonstrate poor engineering properties. The conventional consolidation test device was improved so that it can conduct the consolidation and permeability of gassy marine soils. The improved device can separate the pore water and gas during the testing. The air and water tightness inside the ring and the friction between the piston and the ring are also effectively improved. This paper also presents the results on the gassy soil testing using the improved device. The results are gas content in the soil, preconsolidation pressure, compressibility and coefficient of permeability. The tested parameters are consistent with the soft soil performance and the reliability of the improved device is also verified.

Key words: Gassy Soft Soils, WaterGas Separation, Consolidation, Permeability

CLC Number:

TU411

REN Wenqi, WANG Yong, SUN Jizhu. Development and Preliminary Application of an Improved Testing Device for Consolidation and Permeability of Gassy Soils[J]. Soil Engineering and Foundation, 2019, 33(6): 709-712.

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Development and Preliminary Application of an Improved Testing Device for Consolidation and Permeability of Gassy Soils

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