Journal of the Korean Society for Geothermal and Hydrothermal Energy (한국지열·수열에너지학회논문집)

Korean Society for Geothermal and Hydrothermal Energy (한국지열·수열에너지학회)
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Development of high-performance cement grout for ground heat exchangers

지중열교환기용 고성능 시멘트 그라우트 개발

  • 이동철 (코오롱건설 기술연구센터) ;
  • 양희정 (코오롱건설 기술연구센터) ;
  • 전중규 (코오롱건설 기술연구센터) ;
  • 서신석 (한일시멘트 테크니컬센터) ;
  • 최용민 (한일시멘트 테크니컬센터)
  • Received : 2011.05.06
  • Accepted : 2011.05.30
  • Published : 2011.06.01
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Abstract

Performance of ground-source heat pumps (GSHPs) is mainly affected by ground heat exchangers which makes up more than 40% of construction cost. Exact construction and grout as backfill are important, because it is difficult to repair after being installed. As grout materials, bentonite grout material and cement material are used In this paper, thermal conductivity according to mix proportion of cement grout has been experimentally studied. Some variables were set to evaluate thermal conductivities according to change in cement content, unit water ratio, mass per volume of fresh mortar, and aggregate types. From the experimental analysis, high performance cement grout has been proposed.

Keywords

References

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