A Study on Soil-Water Characteristic Curves of Reclaimed Soil and Weathered Granite Soil

준설매립토 및 화강풍화토의 흙-수분 특성곡선에 관한 연구

  • 신은철 (인천대학교 공과대학 토목환경시스템공학과) ;
  • 이학주 (인천대학교 대학원 토목환경시스템공학과) ;
  • 김환준 (인천대학교 대학원 토목환경시스템공학과)
  • Published : 2002.03.01

Abstract

Unsaturated soil has a possibility to induce a negative pore water pressure. Until now, saturated soil is mainly focused on the research of soil mechanics. Recently, soil mechanics is researched on two major parts such as saturated and unsaturated soil mechanics. Negative pore water pressure has a non-linear relationship with the water content changes. Soil-water characteristic curves of soil in Korea are not determined. There is no proper characteristic value such as air-entry value and residual water content. In this study, the characteristic curves of reclaimed soil, sand, and weathered granite soil were determined by laboratory tests. Air-entry value and residual water content were determined by fitting methods. Soil-water characteristic curves were estimated based on the particle-size distribution and compared with the laboratory test results. The results of soil-water characteristic curves estimation indicated that Fredlund and Wilson's model is excellent for sand and weathered granite soil. Arya and Paris's model is excellent for reclaimed soil.

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