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http://dx.doi.org/10.5345/JKIBC.2020.20.4.305

A Study on the Spalling Properties of Polymer Modified Cement Mortar Using Polypropylene Fiber  

Kim, Min-Sung (Department of Architectural Engineering, Daejin University)
Sim, Sang-Rak (Department of Architectural Engineering, Daejin University)
Ryu, Dong-Woo (Department of Architectural Engineering, Daejin University)
Publication Information
Journal of the Korea Institute of Building Construction / v.20, no.4, 2020 , pp. 305-311 More about this Journal
Abstract
Polymer modified cement mortar (PCM) can improve the performance of adhesion strength, flexural strength, chemical resistance, etc., compared with cement mortar, and is widely used when repairing RC structures. However, PCM causes a burst in an environment with high temperature and fire rate, which causes problems in the stability of the structure. In this study, for the purpose of developing explosive reduction PCM, the polymer mixing ratio is 2%, 4%, 6%, the fiber length is 6mm, 12mm, 6+12mm, and the PP fiber mixing rate is 0.05 Vol% and 0.1 Vol%. Furnace heating experiment (600℃, 800℃) was carried out. As a result of comparative analysis of the explosive properties, it was confirmed that the explosive reduction effect due to the fiber incorporation was insufficient when the polymer mixing amount was 6% or more.
Keywords
polymer; mortar; pcm; non-spalling; polypropylene fiber; fireproof performance; repair material;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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