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http://dx.doi.org/10.4334/JKCI.2006.18.5.631

Effect of Fluorine-Silicate Hybrid Based Crack Reducing Agent on the Resistance for Shrinkage Crack and Gas Permeability of Concrete  

Lee, Man-Ik (Dept. of Architectural Engineering, Daejeon University)
Park, Jong-Hwa (Dept. of Architectural Engineering, Daejeon University)
Nam, Jae-Hyun (Dept. of Architectural Engineering, Daejeon University)
Kim, Do-Su (Tripod Co. Inc.)
Kim, Jae-On (Shin Wall Co. Ltd.)
Publication Information
Journal of the Korea Concrete Institute / v.18, no.5, 2006 , pp. 631-637 More about this Journal
Abstract
In this study, fundamental properties such as fresh and hardened performance of concrete mix(specification : 25-24-18) added fluorine-silicate hybrid based crack reducing agent(FS) were measured. Addition of FS ranged from 0.5% to 2.0% at intervals 0.5% based on cement weight. Adequate dosage(0.5%) of FS derived from basic properties measurements applied and compared resistance for shrinkage crack. The permeability of concrete in the absence(24-S-0.0) and presence(24-S-0.5) of evaluated at a mock-up sized concrete. Concrete added FS improved resistance for shrinkage crack and consequently crack number, length and area decreased to $50{\sim}74.4%$ compared non-added. As well, by the addition of FS, the resistance for permeability and penetration depth to concrete surface region increased 67% and 40%, respectively. Therefore it was confirmed that shrinkage crack resistance and permeability of concrete could be improved by the addition of FS.
Keywords
fluorine-silicate hybrid; crack reducing agent; resistance for shrinkage crack; permeability;
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Times Cited By KSCI : 1  (Citation Analysis)
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