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http://dx.doi.org/10.5345/JKIBC.2015.15.2.177

A Experimental Study on the Property of Lightweight Aggregate Concrete Using Hollow Micro Sphere  

Kim, Sang Heon (The Academy of Applied Science and Technology, KonKuk University)
Kim, Se Hwan (Department of Architectural Engineering, KonKuk University)
Park, Young Shin (Department of Research, Halla ENCOM)
Jeon, Hyun Gyu (Department of Research, GS E&C)
Seo, Chee Ho (Department of Architectural Engineering, KonKuk University)
Publication Information
Journal of the Korea Institute of Building Construction / v.15, no.2, 2015 , pp. 177-183 More about this Journal
Abstract
In this study, the thermal conductivity, physical and mechanical properties of lightweight aggregate concretes with hollow micro sphere(HMS) are experimentally examined as a basic research for the development of structural insulation concrete. As the results of this experiment, in the case of concrete mixed with HMS, the value of slump has been reduced, so it is found that the dosage of superplasticizer should be increased. As the replacement ratio of HMS increases, it has shown that the compressive strength is somewhat decreased due to the low interfacial adhesion strength of HMS. But the thermal conductivity is found to be greatly improved with the replacement ratio of HMS increases, the thermal conductivity of HMS shows the lower value of 68% at lightweight aggregate concrete and 32% of normal concrete. Also it is found that the compressive strength is decreased and thermal conductivity is increased as the water-cement ratio increases. The most outstanding for insulation performance is observed when using 20% of HMS and 50% of water-cement ratio.
Keywords
hollow micro sphere; lightweight aggregate concrete; thermal conductivity; insulation concrete;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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