American Society of Civil Engineers


Analysis of Engineering Properties of Red Clay during Drying Process


by Ling-wei Kong, (Professor of State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, 430071, China E-mail: lwkong@whrsm.ac.cn) and Ai-guo Guo, (Associate Professor, State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, 430071, China; E-mail: agguo@whrsm.ac.cn)
Section: Geotechnical Modeling, pp. 301-306, (doi:  http://dx.doi.org/10.1061/41095(365)27)

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Document type: Conference Proceeding Paper
Part of: GeoFlorida 2010: Advances in Analysis, Modeling & Design
Abstract: In order to understand the behavior change of intact Red clay during the drying process, the engineering properties of the direct shear strength, the unconfined compressive strength and swelling ratio of Red clay from Guigang, China, were investigated. It was discovered that the strengths and swelling parameters of the Red clay varying with the decreasing of moisture content are different at the relative high and low ranges of moisture contents, increasing initially then decreasing during the drying process. The critical points of moisture contents are close to the optimum moisture content of the modified proctor test. The reason is that the inherent engineering properties of the Red clay is determined by the coupled action of moisture content and fissures, the main controlling factors are different at the relative high and low ranges of moisture content, the former being the moisture content and the latter being the fissures.


ASCE Subject Headings:
Clays
Dewatering
Shear strength