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http://dx.doi.org/10.7836/kses.2013.33.1.066

Thermal Conductive Characteristics and Basic Properties of Bentonite Grouts for the Ground Heat Exchanger of Geo-source Heat Pump  

Bai, Kang (Energy Materials and Convergence Research Department, Korea Institute of Energy Research)
Publication Information
Journal of the Korean Solar Energy Society / v.33, no.1, 2013 , pp. 66-72 More about this Journal
Abstract
In this study, the thermal conductive characteristics and basic properties of the nine commercial products of bentonite grouts were studied. Six of the nine products for ground heat exchanger systems are imported and others for civil engineering are domestic. The thermal conductivities of all bentonite products are nearly similar among products. The free swell indexes, viscosities and filter losses of the ground heat exchanger grouts are lower than those of the civil engineering ones. These characteristics seem to increase of the fluidity to fill the bentonite slurry to bore-hall perfectly, rather than to prevent underground water penetration. Thus, the mixtures of bentonites and sands are recommended for high thermal conduction grouts.
Keywords
Bentonite; Grout; Ground Heat Exchanger; Thermal Conductivity; Free Swelling Index; Marsh Funnel Viscosity; Filter Loss;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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