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The Effect of Forced Temperature Change Cycles on Physical and Mechanical Properties of Sand and Weathered Granite Soil

흙과 열유도 토목섬유 접촉면의 마찰저항 특성

  • Shin, Seung-min (School of Civil and Environmental Engineering, Sungkyunkwan Univ. Natural Sciences Campus) ;
  • Sin, Chun-won (School of Civil and Environmental Engineering, Sungkyunkwan Univ. Natural Sciences Campus) ;
  • Yoo, Chung-Sik (School of Civil and Environmental Engineering, Sungkyunkwan Univ. Natural Sciences Campus)
  • Received : 2017.01.12
  • Accepted : 2017.06.22
  • Published : 2017.06.30

Abstract

This paper presents the results of an investigation into the effect of forced temperature change cycles on physical and mechanical properties of sand and weathered granite soil. The effect of forced temperature change cycles on the particle arrangement and the thermal conductivity was first investigated. A series of triaxial compression tests on the soils were also performed to look into the effect of temperature change cycles on the stress-strain-strength behavior.

본 논문에서는 보강토옹벽에 주로 사용되는 화강풍화토 내부에 열선 및 지오그리드를 설치하여 온도변화에 따른 화강풍화토와 지오그리드 사이의 전단력의 변화를 분석하였다. 실제 보강제로 보강되어있는 화강풍화토 내부에 열선에 의한 온도상승이 지반과 보강재 사이의 전단력에 어떠한 영향을 미치는지 확인하기 위해 대형직접전단시험장치를 이용하여 전단시험을 진행하였으며 몰드내부에는 가열된 물로 열을 공급할 수 있는 실리콘재질의 열선이 설치되어 지반의 온도를 상승시키며 온도에 따른 전단 특성을 분석하였다. 또한 축방향 하중을 다르게 하여 온도상승에 의한 지반의 내부마찰각의 변화를 검토하였다.

Keywords

References

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