Experimental Study on Shear Strength of Expansive Soil Improved by Lime - Weathered Sand

Abstract:

This paper ananlyzes and contrasts the direct shear test of the expansive soil with different weathered sand dosage (mass ratio) and different lime dosage (mass ratio) in the case of the expansive soil with some water content and dry density .And try to analyzes and researches the impact of expansive soil improved by weathered sand and lime shear strength index . The direct shear test by the expansive soil mixed with different proportions of weathered sand and lime can be concluded that: mixing the weathered sand to improve the shear strength of expansive soil is effective, and cohesion gradually decreases with the increase of doped proportion of sand and the angle of internal friction first increases with the increase of doped proportion of sand and then decreases ;mixing of lime is effective to improve the shear strength of expansive soil, and cohesion gradually decreases with the increase of doped proportion of lime and angle of internal friction first increases and then decreases with the increase of doped proportion of lime. The shear strength of improved expansive soil can meet the subgrade filling with soil standards and at the same time the expansive soil improved by weathered sand and lime reduces the amount of lime and reduce project cost when to achieve the same shear strength standards.

• Periodical: Applied Mechanics and Materials (Volumes 446-447)
• Pages: 1441-1447
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.446-447.1441
• Online since: November 2013
• Authors: Meng Yun Huang, Jun Lai Xiong, Ji Bing Tang, Chi Long
• Keywords: Expensive Soil, Lime, Shear Strength, Weathered Sand

References

[1] B. T. Wang, F. H. Zhang, and H. Wen. Study on construction techniques and characteristics of lime－stabilized expansive soil, [J] Chinese Journal of Rock Mechanics and Engineering, (2006).

[2] Y. X. Juan, W. Yuan, Adding lime-treated expansive soil subgrade Experimental Research Study, [J], Highway, pp.13-61, (2000).

[3] J. Xiao, B. T. Wang, Y. C. Sun, F. H. Zhang, and P. X. Song, The cement lime composite improvement of expansive clays, [J]. South-to-North Water Transfers and Water Science and Technology, (2012).

[4] J. Liu, B. Huang, B. W. Gong, and B. Hu, The expansive soil cement modified uniformity and long-term Study on the Efficacy, [J]. Northwestern Seismological Journal, August, (2011).

[5] X. Y. Liu, Y. H. Yang, Lime expansive soil improved filler Experimental Study, [J]. Railway Standard Design, (2012).

[6] Highway Research Institute of the Ministry of Transportation Road Soil Test Procedures, [M] Beijing: Beijing Jiao Tong Press, (2007).

[7] Q. K. Gu, Y. C. Guo. Lime, cement, fly ash and improved expansive soil comparison test, [M]. Highway, Jun (2008).

[8] S. W. Li, X. F. Wang, Guangzhou Western Second Ring Expressway expansion the Land Reform Study on the Efficacy, [J]. Highway, October, (2010).

[9] S. L. Tan, L. Huang, Y. H. Li, lime modified engineering properties of expansive soil, [J]. Journal of Engineering Geology, (2009).

[10] X. M. Wu，X. Y. Wu, Cement improvement of expansive clays, [J]. Subgrade, (2007).

[11] Y. X. Juan, Y. Wang, Doped lime-treated expansive soil subgrade Experimental Research Study, [J] Road, (2000).

[12] H. H. Miao, Chemical Modify and Experimental Study on Mechanical Property of Swelling Soil, [D]. Dalian: Dalian University of Technology, (2005).

[13] E. Cokca, Use of class C fly ash for the stabilization of an expansive soil, [J]. Journal of Geo technical and Geo-environmental Engineering, ASCE, (2001).