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Title |
Characteristics of Cement Matrix/Mortar with CaO-based Activated-sludge
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Authors |
이용수(Yong-Soo Lee) ; 유성룡(Seong-Lyong Ryu) ; 신광호(Kwang-Ho Shin) ; 추용식(Yong-Sik Chu) ; 김영엽(Young-Yup Kim) |
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DOI |
https://doi.org/10.4334/JKCI.2017.29.4.399 |
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Keywords |
activated-sludge ; CaO-based by-product ; desulfurization gypsum ; recycling water ; cement matrix |
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Abstract |
CaO-based by-product, which consist of CaO, SO3, Al2O3 and so on, has being used to raw materials of CaO compound. When It was applied to recycling water of remicon, concrete performance can be enhanced because hydration reaction of powder material is accelerated. In this study, activated-sludge, which was putted desulfurization gypsum of CaO-based in recycling water, was manufactured to verify effect of them, and then they was investigated by characteristics of cement matrix and mortar. As a results, they indicated reduction of setting time and high soundness in cement matrix, and acceleration of hydration reaction can be verified by XRD analysis. Also, it can be maintained good workability if water content by usage of desulfurization gypsum, which used for production of activated-sludge, was adjusted. In addition, it can be verified strength development by activated-sludge although cement content by usage of desulfurization gypsum was reduced.
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