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http://dx.doi.org/10.14190/JRCR.2021.9.1.92

Utilization of Ready-mixed Concrete Recycling Water Mixed with Hot-rolled Slag Containing C12A7 and Application Characteristics of Cement Mortar  

Kim, Young-Yeop (Department of Architectural System Engineering, Hanyang University ERICA)
Lee, Han-Seung (Department of Architectural System Engineering, Hanyang University ERICA)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.9, no.1, 2021 , pp. 92-99 More about this Journal
Abstract
CaO-based by-products composed of CaO, SO3, Al2O3, etc. are generally used as raw materials for CaO compounds. When applied to the recovered water of ready-mixed concrete, the hydration reaction of the powder material is accelerated and concrete performance can be improved. In this study, activated sludge was prepared to apply to the recovered water of ready-mixed concrete by mixing CaO-based hot-rolled slag(C12A7) in the recycling water of ready-m ixed concrete. Cem ent paste setting time and mortar compressive strength performance tests confirmed the effect on the hydration reaction. Therefore, the possibility of concrete application using activated sludge was confirmed.
Keywords
Activated-sludge; CaO-based by-product; Hot-rolled slag; Recycling water; Cement mortal;
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