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Apr 26, 2012
Measurement of Soil Air Suction Change during Freezing-Thawing Process
Authors: Yan Liu [email protected], Xinbao Yu [email protected], and Xiong (Bill) Yu [email protected]Author Affiliations
Publication: Soils and Rock Instrumentation, Behavior, and Modeling: Selected Papers from the 2009 GeoHunan International Conference
Abstract
This paper introduces a new instrument and experimental procedure that estimates the change of air suction in soils during the freeze-thaw process. The experimental procedures include a nondestructive measurement by Time Domain Reflectometry (TDR) sensor, which captures the freezing-thawing status. The change of air suction causes change of soil volume, which is estimated from the volume change and soil deformation modulus. The experimental data indicates there is graduate decrease in the magnitude of the negative air suction, which resulted in volume expansion in soils. The observed bulk volume change is the combined effects of the volume contraction due to ice melting and the volume expansion due to the reduction in the negative air suction. The magntiude of air suction reduction estimated is achieved by fusion the information from both mechanical and electromagnetic measurment.
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© 2009 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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Graduate Assistant, Department of Civil Engineering Department, Case Western Reserve University, 10900 Euclid Ave Bingham 217, Cleveland, OH 44106, USA,. E-mail: [email protected]
Graduate Assistant, Department of Civil Engineering Department, Case Western Reserve University, 10900 Euclid Ave Bingham 203, Cleveland, OH 44106, USA,. E-mail: [email protected]
Assistant Professor, Department of Civil Engineering Department, Case Western Reserve University, 10900 Euclid Ave Bingham 210, Cleveland, OH 44106, USA,. E-mail: [email protected]
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