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Effect of Saturated Tea Waste and Perlite Particles on Early Age Hydration of High-Strength Cement Mortars

Title
Effect of Saturated Tea Waste and Perlite Particles on Early Age Hydration of High-Strength Cement Mortars
Author
유재석
Keywords
black tea waste; hydration; setting times; absorption; strength; ultrasonic pulse velocity
Issue Date
2019-07
Publisher
MDPI
Citation
MATERIALS, v. 12, no. 14, article no. 2269
Abstract
The main purpose of this work is to study the effect of saturated black tea waste and perlite on controlling the rapid heat of hydration in high-strength cement mortars at early ages. Tea waste and perlite were investigated as internal curing agents in different mixes. Mortar specimens with two different sizes of tea waste and perlite particles with 1 and 3% by volume of cement were added in different mixes to find their effect on early age hydration. The rising interior temperature, setting times, and strength parameters were evaluated. Results showed that the mix specimens that contained 3% tea waste and perlite particles significantly delayed the hydration process by minimizing internal temperature and extended setting times of different specimens. However, their usage had a slightly adverse impact on compressive and flexural strengths. It was observed that the specimens made with coarser particles of tea waste and perlite were more helpful to control early age rapid hydration than the specimens made with finer particles, whereas the specimens made with finer particles had slightly higher strengths than the specimens made with coarser particles. Hence, the coarser particles are recommended to be used in high-strength mortars to mitigate the early age rapid heat of hydration.
URI
https://www.mdpi.com/1996-1944/12/14/2269https://repository.hanyang.ac.kr/handle/20.500.11754/152164
ISSN
1996-1944
DOI
10.3390/ma12142269
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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