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Determination of the Soil-water Characteristic Curve Using the Flow Pump Technique  

황창수 (미국 콜로라도 주립대학교 토목환경건축공학과)
김태형 (현대건설(주) 기술연구소)
Publication Information
Journal of the Korean Geotechnical Society / v.19, no.5, 2003 , pp. 155-162 More about this Journal
Abstract
The soil-water characteristic curve (SWCC) represents the essential constitutive relationship for solving various problems in unsaturated soil mechanics. A reliable and convenient experimental method is needed for the determination of the SWCC in engineering applications. This study introduces and proves that the suction-saturation experimental measurement based on the flow pump technique is a convenient and accurate method for obtaining the SWCC. The flow pump technique provides complete control over the test conditions and is capable of detecting all the important elements of the SWCC. In particular, it is capable of defining continuous drying and wetting curves, the moment of air occlusion, and the hysteretic behavior of unsaturated soils. Not only the optimal testing procedure but also the analysis technique for the flow pump technique has been established in this study. Especially, the method of the suction drop measurement was developed to measure the SWCC. This method is a convenient and time saving method without losing accuracy.
Keywords
Flow pump technique; Soil-water characteristic curve; Suction-saturation test; Unsaturated flow;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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