Test Study on Mechanical Properties of the Lime Stabilized Expansive Soil under Wet and Dry Cycle

Abstract:

Lime Stabilized expansive soil is often used as filler in road subgrade, although many scholars have done a lot of research, the mechanical properties under wet and dry cycle role remains unclear. The paper Carried out direct shear test, consolidation test and CBR test on the lime stabilized expansive soil after the different times of wet and dry cycle. The test results show: The strength of soil will decrease, especially in previous cycle, and the trends can be expressed with logarithmic model; the deformation index (compression coefficient) of soil will increase, especially in previous cycle, and the trend can be expressed with powder model; through more cycles, no matter the strength or the deformation index of the sample tends to a stable value; the stable intensity is about 40%-60% of the original intensity.

• Periodical: Applied Mechanics and Materials (Volumes 174-177)
• Pages: 166-170
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.174-177.166
• Online since: May 2012
• Authors: Yun Dong, Bao Tian Wang
• Keywords: Consolidation Test, Direct Shear Test, Lime Stabilized Expansive Soil, Wet and Dry Cycle

References

[1] YANG He-ping, XIAO Duo. The Influence of Alternate Dry-wet Effect on the Strength Characteristic of Expansive Soils, Journal of Changsha University of Science and Technology (Natural Science), Vol.2 No.2, Jun.2005: 1~5

[2] YANG He-ping, ZHANG Rui, ZHENG Jian-long. Variation of deformation and strength of expansive soil during cyclic wetting and drying under loading condition, Chinese Journal of Geotechnical Engineering, Vol.28 No.11, Nov., 2006:1936~(1941)

[3] ZHA Fu-sheng,CUI Ke-rui1.LIU Song-yu etc. Experimental study on cyclic swell-shrink behavior of expansive soils, Journal of Hefei University of Technology, Vol.32 No.3, Mar. 2009:31-34

[4] Snehasis Tripathy, Kanakapura S. Subba Rao. Cyclic Swell–Shrink behaviour of a Compacted Expansive Soil, Geotech Geol Eng (2009) 27:89–103.

DOI: 10.1007/s10706-008-9214-3

[5] MU Xian-jie, ZHANG Xiao-ping. Research on mechanical properties of expansive soil under wetting-drying cycle, Rock and Soil Mechanics, Vol.28 Supp. Nov. 2008:580-581.

[6] WANG Jian-hua, GAO Yu-qin. Study on the Strength Degradation Mechanism of Cement-Soils Resulting from Dry-Wet Cycles, China Railway Science, Vol.27 No.5, September,2006:23-27.