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Experimental Studies on the Improvement of Soft Soils by Cement in Vinh Long City
The Mekong river delta is widely known as one of the soft soil areas in the world in which the uppermost layers of soft soil have to be improved for construction projects. Soft soil reinforcement method by using soil cement columns is very popular by enhancing the strength and the deformation characteristics of soft soils. In this paper, a comprehensive laboratory testing program was carried out to study the effect of cement content and the degree of saturation on the physical and the mechanical behavior of soil-cement mixtures. Several unconfined compression tests, triaxial compression tests, direct shear tests, and the permeability tests have been carried out on the samples of cement-treated soft soils of Vinh Long city by varying the content of Portland cement. The results indicate that shear strength increases as the cement content increases, and the permeability coefficient decreases as the cement content increases. There are remarkable differences between the shear strength, and the Young’s modulus of the unsaturated and saturated samples. In addition, in the saturated samples, as the confining pressure increase from 0 to 400 kPa, the deviator stress and the Young’s modulus fluctuate insignificantly.
Experimental Studies on the Improvement of Soft Soils by Cement in Vinh Long City
The Mekong river delta is widely known as one of the soft soil areas in the world in which the uppermost layers of soft soil have to be improved for construction projects. Soft soil reinforcement method by using soil cement columns is very popular by enhancing the strength and the deformation characteristics of soft soils. In this paper, a comprehensive laboratory testing program was carried out to study the effect of cement content and the degree of saturation on the physical and the mechanical behavior of soil-cement mixtures. Several unconfined compression tests, triaxial compression tests, direct shear tests, and the permeability tests have been carried out on the samples of cement-treated soft soils of Vinh Long city by varying the content of Portland cement. The results indicate that shear strength increases as the cement content increases, and the permeability coefficient decreases as the cement content increases. There are remarkable differences between the shear strength, and the Young’s modulus of the unsaturated and saturated samples. In addition, in the saturated samples, as the confining pressure increase from 0 to 400 kPa, the deviator stress and the Young’s modulus fluctuate insignificantly.
Experimental Studies on the Improvement of Soft Soils by Cement in Vinh Long City
Lecture Notes in Civil Engineering
Reddy, J. N. (editor) / Wang, Chien Ming (editor) / Luong, Van Hai (editor) / Le, Anh Tuan (editor) / Pham, Quang Vinh (author) / Phu, Nhat Truyen (author) / Le, Ba Vinh (author) / Vo, Dinh Uy (author)
2020-07-28
8 pages
Article/Chapter (Book)
Electronic Resource
English
Cement deep mixing (CDM) , Shear strength , Deviator stress , Young’s modulus , Tri-axial test , Hydaulic conductivity , Vinh long city Engineering , Building Construction and Design , Sustainable Development , Structural Materials , Landscape/Regional and Urban Planning , Solid Mechanics , Construction Management
ASSESSMENT ON CURRENT MANAGEMENT OF EXPLOITATION AND USE OF GROUNDWATER IN TRA VINH CITY
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