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Development of high-performance cement grout for ground heat exchangers  

Lee, Dong-Chul (KOLON E&C R&BD Center)
Yang, Hee-Jung (KOLON E&C R&BD Center)
Jeon, Joong-Kyu (KOLON E&C R&BD Center)
Seo, Shin-Seok (Hanil Cement Technical Center)
Choi, Yong-Min (Hanil Cement Technical Center)
Publication Information
Journal of the Korean Society for Geothermal and Hydrothermal Energy / v.7, no.1, 2011 , pp. 10-16 More about this Journal
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
Ground heat exchangers; GSHPs; Cement grout; Bentonite grout;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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