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http://dx.doi.org/10.15683/kosdi.2020.09.30.577

An Experimental Study on the Engineering Characteristics Analysis of Unsaturated Weathered Granite Soil  

Kim, Joon-Seok (Department of civil and environmental engineering, Chungwoon University)
Publication Information
Journal of the Society of Disaster Information / v.16, no.3, 2020 , pp. 577-585 More about this Journal
Abstract
Purpose: The presence of the matric suction in unsaturated soil increases the stability of the slope, but the reduction of the matric suction due to precipitation can cause sudden slope failure, resulting in a major disaster. In this paper, engineering characteristics in unsaturated state were analyzed for granite weathering soil, which is the representative mountain soil of Korea. Method: Experiments and analysis were conducted on granulated weathering soil as unsaturated shear strength relationships for moisture characteristic curves, unsaturated injection curves, and matric suction under unsaturated conditions. Result: It was analyzed that a rapid change in the matric suction for volumetric water content occurs compared to the case where the particle size distribution is poor and the particle size distribution is good. A good case for the particle size distribution indicates a relatively small permeability coefficient at the same matric suction capacity compared to a poor case. The greater thematric suction, the greater the shear strength. Conclusion: For Korea's representative soil, granulated weathering soil, the functional characteristic curves, unsaturated permeability coefficients, unsaturated shear strength, etc., which are engineering characteristics in unsaturated state, were tested to secure each correlation.
Keywords
Unsaturated Soil; Matric Suction; Moisture Characteristic Curves; Unsaturated Shear Strength; Unsaturated Permeability Coefficients;
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Times Cited By KSCI : 4  (Citation Analysis)
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