Numerical Search of the Optimum Curing Regimes for High-Early-Strength Concrete
Publication: Journal of Materials in Civil Engineering
Volume 32, Issue 4
Abstract
High-early-strength concrete (HESC) made of Type III cement attains approximately 60%–70% of its design compressive strength at ambient temperature in 1 day. A numerical method incorporating a rate-constant model was developed to optimize curing regimes for HESC at preassigned maximum temperatures of 40°C, 50°C, and 60°C with design concrete compressive strengths of 30, 40, and 50 MPa. The use of HESC after optimization resulted in 36%–55% savings in terms of energy index, compared with the curing regime typically applied for concrete with Type I cement. Experimental verification was performed by compression tests for HESC that were cured according to the optimum regimes. Compared with conventional trial-and-error mix methods, the developed numerical model contributes to a significant reduction of the number of trial mixes and provides in a systematic way the effects of design variables on optimum curing regimes.
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Acknowledgments
This research was supported by Chung-Ang University Research Grants in 2017, and the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (NRF-2013R1A2A2A01011563).
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Published In
Journal of Materials in Civil Engineering
Volume 32 • Issue 4 • April 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Jan 29, 2019
Accepted: Oct 2, 2019
Published online: Feb 11, 2020
Published in print: Apr 1, 2020
Discussion open until: Jul 11, 2020
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