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Title |
A Study on the Mechanical Properties of Polymer Repair-Mortars with CFBC Ash
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Authors |
강용학(Yong Hak Kang) ; 임귀환(Gwi Hwan Lim) ; 신동철(Dong Cheol Shin) ; 최영철(Young Cheol Choi) |
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DOI |
https://doi.org/10.11112/jksmi.2018.22.5.127 |
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Keywords |
순환유동층 보일러애시 ; 자기수경성 ; 폴리머 혼입 보수 모르타르 ; 최적 배합 CFBC ash ; Self-cementing property ; Polymer-modified mortar for maintenance ; Optimal mixture |
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Abstract |
The amount of generated Circulating Fluidized Bed Combustion ash (CFBC ash) is annually increasing, but most CFBC ash has been landfilled and discarded due to the limited utilization. The major chemical compositions of CFBC ash are SiO2, CaO and CaSO4, which could form hydration products by reacting with water as self-cementing property such as cement. The purpose of the this study is to derive the optimal mix proportions to improve polymer-modified mortar with the use of CFBC ash which has the self-cementing property. In order to develop polymer-modified mortar, three mix proportions were determined, and fundamental properties for the mixtures were obtained. As a result, the optimal mixture containing 10 percent of silica fume, 1.0 percent of polymer and 3.5 percent of expansive additives were proposed in this study.
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