Publisher : The Korean Institute of Building Construction
DOI : 10.5345/JKIBC.2016.16.1.009
Title & Authors
The Thermal Conduction Property of Structural Concrete using Insulation Performance Improvement Materials Park, Young-Shin; Kang, Min-Gi; Kim, Jung-Ho; Ji, Suk-Won; Jeon, Hyun-Kyu;
The part of a building with the biggest energy loss is the exterior and many studies are actively conducted to reduce the energy loss on that part. However, most studies consider the window frames and insulation materials, but many studies do not discuss the concrete that takes more than 70% of the exterior. In order to minimize the energy loss of buildings, it is necessary to enhance the concrete`s insulation performance and studies need to be conducted on this. Therefore, this study used a micro foam cell admixture, calcined diatomite powder, and lightweight aggregates as a part of a study to develop a type of concrete with improved insulation performance that has twice higher thermal conductivity compared to concrete. It particularly secured the porosity inside concrete to lower thermal conductivity. As a result of the experiment, the slump and air capacity showed fair results, but all mixtures containing micro foaming agent showed 14.3~35.1% lower mass per unit of volume compared to regular concrete. Compressive strength decreased slightly due to the materials used to improve the insulating performance, but it all satisfied this study`s target strength(24MPa). Thermal conductivity was up to twice higher than that of regular concrete.
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