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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

Seung-min Shin1
,
Chun-won Sin2*
,
Chung-Sik Yoo3
신 승민1
,
신 춘원2*
,
유 충식3
1Member, the master´s course, School of Civil and Environmental Engineering, Sungkyunkwan Univ
2 Member, the master´s course, School of Civil and Environmental Engineering, Sungkyunkwan Univ.
3Member, Professor, School of Civil and Environmental Engineering, Sungkyunkwan Univ.
*교신저자. *Corresponding Author. 
30 June 2017. pp. 175-181
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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.

Keywords
Thermo-hydromechanical
Heat exchangers
Weathered granite soil
Geosynthetic

본 논문에서는 보강토옹벽에 주로 사용되는 화강풍화토 내부에 열선 및 지오그리드를 설치하여 온도변화에 따른 화강풍화토 와 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 진행하 였으며 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.

References
1
Adams, Michael. (2011), “Geosynthetic Reinforced Soil Integrated Bridge System.” EuroGeo4 Paper number 271.
2
Tsutsumi, Ayato, and Hiroyuki Tanaka. (2012), “Combined effects of strain rate and temperature on consolidation behavior of clayey soils.” Soils and Foundations 52.2, pp.207-215.
3
Moritz, Lovisa. (1995), “Geotechnical properties of clay at elevated temperatures.” Swedish Geotechnical Institute SGI, S-581.
4
Coccia, C. J. R. and John S. McCartney, J. (2013), “Impact of Heat Exchange on the Thermo-Hydro-Mechanical Response of Reinforced Embankments”, Geo-Congress 2013, ASCE 2013, pp343-352.
5
Vega, A. (2012), “Impact of temperature cycles on the termal consolidation of saturated silt under different stress states”, B.S., Colorado State University-Pueblo.
6
McCartney, J. S., HaHaise, D., LaHaise, T., and Rosenberg, J. (2010), “Application of Geoexchange Experience to Geothermal Foundations”, GeoFlorida, 2010.
Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 16
  • No :2
  • Pages :175-181
  • Received Date : 2017-01-12
  • Revised Date : 2017-06-21
  • Accepted Date : 2017-06-22
  • DOI :https://doi.org/10.12814/jkgss.2017.16.2.175
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