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The soil-water characteristic curve of unsaturated tropical residual soil

Yusof, M. F. and Setapa, A. S. and Tajudin, S. A. A. and Madun, A. and Abidin, M. H. Z. and Marto, A. (2016) The soil-water characteristic curve of unsaturated tropical residual soil. In: Soft Soil Engineering International Conference 2015, SEIC 2015, 27 October 2015 through 29 October 2015, Langkawi; Malaysia.

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Abstract

This study was conducted to determine the SWCC of unsaturated tropical residual soil in Kuala Lumpur, Malaysia. Undisturbed soil samples at five locations of high-risk slopes area were taken at a depth of 0.5 m using block sampler. In the determination of the SWCC, the pressure plate extractor with the capacity of 1500 kN/m2 has been used. The index properties of the soil such as natural moisture content, Atterberg limits, specific gravity, and soil classification are performed according to BS 1377: Part 2: 1990. The results of index properties show that the natural moisture content of the soil is between 36% to 46%, the plasticity index is between 10% - 26%, the specific gravity is between 2.51 - 2.61 and the soils is classified as silty organic clay of low plasticity. The SWCC data from the pressure plate extractor have been fitted with the Fredlund and Xing equation. The results show that the air entry value and residual matric suction for residual soils are in the range of 17 kN/m2 to 24 kN/m2 and 145 kN/m2 to 225 kN/m2 respectively. From the fitting curve, it is found that the average value of the Fredlund and Xing parameters such as a, n and m are in the range of 0.24-0.299, 1.7-4.8 and 0.142-0.440 respectively.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:soil water characteristic curve, Unsaturated soil
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Civil Engineering
ID Code:73117
Deposited By: Muhammad Atiff Mahussain
Deposited On:20 Nov 2017 08:33
Last Modified:20 Nov 2017 08:33

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