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http://dx.doi.org/10.5345/JKIBC.2022.22.1.023

A Study on the Adhesion Properties of Polymer-Cement Composites for Repairing Cracks in RC Structures  

Jo, Young-Kug (Department of Architectural Engineering, Chungwoon University)
Hong, Dae-Won (Department of Architectural Engineering, Chungwoon University)
Kwon, Woo-Chan (Department of Architectural Engineering, Chungwoon University)
Kim, Wan-Ki (Department of Architectural Engineering, Hyupsung University)
Publication Information
Journal of the Korea Institute of Building Construction / v.22, no.1, 2022 , pp. 23-34 More about this Journal
Abstract
The purpose of this study is to evaluate the adhesion properties of polymer cement composites for crack repair of an RC structure. Polymer cement composites are manufactured from cement, three types of polymers and silica fume, and the mixture is designed by adjusting the water cement ratio and AE reducing agent so that the viscosity target of the polymer cement composites is 700mPa·s or less. According to the test results, the Type-A adhesion in tension of the polymer cement composite exceeded the adhesion standard of 1.0MPa of the polymer finishing material, and furthermore, depending on the type of polymer, the adhesion in tension was highest for SAE, followed in descending order by EVA, and SBR. In addition, the adhesion in tension of Type-B is up to 1/4.5 lower than that of Type-A, but the incorporation of silica fume shows a significant improvement in terms of adhesion in tension. Based on this study, the basic mixing design of the polymer cement composites required for viscosity and adhesive performance required for crack repair of the RC structure was completed. It could be proposed as an optimal mixing design under conditions for intermixing polymer type EVA, SAE, and P/C 80%-100%.
Keywords
polymer cement composites; viscosity; flow; polymer-cement ratio; silica fume;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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