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Title |
Durability of Concrete Using Insulation Performance Improvement Materials
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Authors |
박영신(Young-Shin Park) ; 김정호(Jung-Ho Kim) ; 김세환(Se-Hwan Kim) ; 김상헌(Sang-Heon Kim) ; 전현규(Hyun-Kyu Jeon) |
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DOI |
http://dx.doi.org/10.11112/jksmi.2015.19.3.022 |
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Keywords |
열전도율 ; 마이크로기포제 ; 규조토 미분말 ; 경량골재 ; 내구성 Thermal conductivity ; Micro foam cell admixture ; Calcined diatomite powder ; Lightweight aggregate ; Durability |
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Abstract |
In this study, we tested to develop and apply structural insulation performance improvement concrete to field, which had compressive strength in 24 MPa and thermal conductivity twice as much as normal concrete. After experiment about slump and air contents, combination product of Plain and calcined diatomite powder showed reduction of slump and air contents and combination product with micro foam cell admixture, we cannot find result of slump and air contents reduction. Unit weight of combination product with insulation performance improvement materials decreased more than that of Plain. In the test of compressive strength, compressive strength of insulation performance improvement concrete decreased more than that of Plain but was content with 24 MPa. thermal conductivity of insulation performance improvement concrete tended to decrease. Freezing and thawing resistance of insulation performance improvement concrete was similar to that of Plain. In carbonation resistance test, combination product with calcined diatomite powder showed the result which was similar to that of Plain. In carbonation resistance test, combination product with micro foam cell admixture showed a increase compared to that of Plain and length variation of combination product generally increased.
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