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http://dx.doi.org/10.14190/JRCR.2022.10.1.15

Hydration Reaction and Strength Characteristics of Cement Mortar Mixed with Spent Coffee Ground  

Choi, Yoon-Suk (Construction Technology Research Center, Korea Conformity Laboratories)
Lim, Gwi-Hwan (Construction Technology Research Center, Korea Conformity Laboratories)
Suh, Jung-Il (Construction Technology Research Center, Korea Conformity Laboratories)
Kim, Sung-Bae (Technology Research Institute, J1 Industries)
Park, Byoungsun (Department of Environment Engineering, Korea University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.10, no.1, 2022 , pp. 15-22 More about this Journal
Abstract
In this study, the hydration reaction and strength characteristic of cement mortar with spent coffee ground(SCG) was investigated. As a result of the study, it was found that as the firing temperature of the SCG increased, the mass loss due to the combustion of organic matter increased, but the density increased. In addition, when the SCG were mixed, SCG interfered with the hydration reaction and the compressive strength was significantly lowered. On the other hand, the coffee grounds ash(SCG_Ash) calcined at 800 ℃ showed a hydration reaction and a compressive strength equivalent to or higher than that of OPC mortar.
Keywords
Coffee ground; Spent coffee ground ash; Recycling; Cement hydration; Compressive strength;
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