Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Compressive Strength Properties and Freezing and Thawing Resistance of CSG Materials

CSG 재료의 압축강도 특성 및 동결융해 저항성

  • 연규석 (강원대학교 지역건설공학과) ;
  • 김영익 (강원대학교 지역건설공학과) ;
  • 현상훈 (강원대학교 지역건설공학과) ;
  • 김용성 (강원대학교 지역건설공학과)
  • Published : 2010.01.31
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Abstract

The cemented sand and gravel (CSG) method is a construction technique that adds cement and water to rock-like materials, such as rivered gravel or excavation muck which that can be obtained easily at areas adjacent to dam sites. This study was performed to evaluate the unconfined compressive strength properties and freezing and thawing resistance of CSG materials with unit cement content. The three types of CSG-80, CSG-100 and CSG-120 with cement content were designed to evaluate the optimum water content, dry density, strength, stress-strain, micro structure and durability factor. As the results, the optimum water content ratio with cement content showed almost similar tendency, and the unconfined compressive strength and dry density increased as cement content increases. The strength ratio of 7 days for 28 days were in the range of 55~61 % and the strain ratio in stress-strain curve were in the range of 0.8~1.6 % nearby maximum strength in 28 days. It is expected that this study will contribute to increasing application of CSG method as well as to increasing the utilizing of CSG materials as a environmentally friendly CSG method.

Keywords

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