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[1]DU Changcheng,ZHU Yanbo,MIAO Shuaisheng,et al.Effect of Initial Moisture Content on the Shrinkage Characteristics of the Red Soil of Hipparion[J].Research of Soil and Water Conservation,2019,26(01):227-233.

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Effect of Initial Moisture Content on the Shrinkage Characteristics of the Red Soil of Hipparion

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 26 Number of periods: 2019 01 Page number: 227-233 Column: Public date: 2019-02-28

Title:: Effect of Initial Moisture Content on the Shrinkage Characteristics of the Red Soil of Hipparion

Author(s):: DU Changcheng, ZHU Yanbo, MIAO Shuaisheng, GAO Mingming, ZHU Junhua, ZHAO Fasuo; College of Geological Engineering and Geomatics, Chang’an University, Xi’an 710054, China

Keywords:: red soil of Hipparion; dehumidification; dry shrinkage deformation; moisture content; digital image quantitative processing

CLC:: TU44

DOI:: -

Abstract:: The swelling and shrinkage characteristics of red soil of Hipparion were obvious, and the water shrinkage cracking had significant effect on the stability of natural slope and engineering slope. We used the designed test monitoring devices to carry out different initial moisture state hipparion red clay reshape sample drying dehumidifying test, and used digital image processing technology to obtain quantitative sample drying shrinkage deformation of dynamic quantitative data, and get the following conclusions. (1) The hipparion red soil specimen water loss curve presents obvious three stages:rapid water loss, slow water loss, and residual water loss, and water loss curve is significantly influenced by the initial moisture content, the greater the initial moisture content is, the faster the sample water loss rate is, and more intense filtration process is; (2) The hipparion red soil specimen contraction curve presents obvious four stages:rapid shrinkage phase, slow contraction phase and residual phase and zero contraction phase, and a significant contraction curve is influenced by the initial moisture content, the greater the initial moisture content is, the more intense the shrinkage process is, and the greater eventual radial shrinkage strain is; (3) The ultimate shrinkage strain and initial moisture content of the tri-toe horse red soil sample has the significantly linear relation.

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