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http://dx.doi.org/10.14190/JRCR.2022.10.1.74

Hydration Properties of High-strength Cementitious Composites Incorporating Waste Glass Beads  

Pyeon, Su-Jeong (Department of Architectural Engineering, Chungnam National University)
Kim, Gyu-Yong (Department of Architectural Engineering, Chungnam National University)
Lee, Sang-Soo (Department of Architectural Engineering, Hanbat National University)
Nam, Jeong-Soo (Department of Architectural Engineering, Chungnam National University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.10, no.1, 2022 , pp. 74-79 More about this Journal
Abstract
In this study, the effect of a sudden decrease in internal humidity and a decrease in hydration level due to the tight internal structure of high-strength concrete and cement composites was investigated. To verify the change in the internal Si hydration, waste glass foam beads were used as a lightweight aggregate, and the internal unreacted hydrate reduction and hydrate formation tendency were identified over the mid- to long-term. Waste glass foam beads were mixed with 5, 10, and 20 %, and were used by pre-wetting. As the mixing rate of the waste glass foamed beads increased, the strength showed a tendency to decrease. In addition, when the mixing amount of pre-wetted waste glass foam beads increases inside through XRD analysis, TGA analysis, and Si NMR analysis, it is judged that the hydration degree of internal Si is different because moisture is supplied to the paste.
Keywords
High-strength cementitious composites; Light weight aggregate; Waste glass bead; Hydration;
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