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Volume 11
Issue 12
10.3390/ma11122487
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Article

Optimization of Steam-Curing Regime for Recycled Aggregate Concrete Incorporating High Early Strength Cement—A Parametric Study

by
Asad Hanif
1,
Yongjae Kim
2,*,
Muhammad Usman
3 and
Cheolwoo Park
2,*
1
Department of Civil Engineering, Mirpur University of Science and Technology (MUST), Allama Iqbal Road, Mirpur AJ&K 10250, Pakistan
2
Department of Civil Engineering, Kangwon National University, 346, Jungang-ro, Samcheok-si, Gangwon-do 25913, Korea
3
School of Civil and Environmental Engineering, National University of Science and Technology (NUST) Sector H-12, Islamabad 44000, Pakistan
*
Authors to whom correspondence should be addressed.
Materials 2018, 11(12), 2487; https://doi.org/10.3390/ma11122487
Submission received: 14 November 2018 / Revised: 28 November 2018 / Accepted: 3 December 2018 / Published: 7 December 2018
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Abstract

This paper investigates the properties of steam cured recycled aggregate concrete (RAC), in an attempt to determine the optimum conditions of the steam-curing cycle for RAC, and incorporating high early strength cement (HESC). Varying conditions of steam curing were employed. The steam-curing cycle was set based on the peak temperature, and the duration for which the peak temperature was maintained. Three peak temperatures were used for steam curing, 50 °C, 60 °C, and 70 °C, maintained for up to two hours. The compressive strength results indicated that the steam-curing cycle employing the peak temperature of 50 °C maintained for one hour with a total duration of four hours was the optimum for strength development, both at the early and late stages of hydration. Determining the optimum steam-curing temperature and duration will help reduce the associated curing cost, thus further economizing the production cost of recycled aggregate concrete.
Keywords: recycled aggregate; steam curing; waste recycling; concrete; mechanical properties; high early strength recycled aggregate; steam curing; waste recycling; concrete; mechanical properties; high early strength

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MDPI and ACS Style

Hanif, A.; Kim, Y.; Usman, M.; Park, C. Optimization of Steam-Curing Regime for Recycled Aggregate Concrete Incorporating High Early Strength Cement—A Parametric Study. Materials 2018, 11, 2487. https://doi.org/10.3390/ma11122487

AMA Style

Hanif A, Kim Y, Usman M, Park C. Optimization of Steam-Curing Regime for Recycled Aggregate Concrete Incorporating High Early Strength Cement—A Parametric Study. Materials. 2018; 11(12):2487. https://doi.org/10.3390/ma11122487

Chicago/Turabian Style

Hanif, Asad, Yongjae Kim, Muhammad Usman, and Cheolwoo Park. 2018. "Optimization of Steam-Curing Regime for Recycled Aggregate Concrete Incorporating High Early Strength Cement—A Parametric Study" Materials 11, no. 12: 2487. https://doi.org/10.3390/ma11122487

APA Style

Hanif, A., Kim, Y., Usman, M., & Park, C. (2018). Optimization of Steam-Curing Regime for Recycled Aggregate Concrete Incorporating High Early Strength Cement—A Parametric Study. Materials, 11(12), 2487. https://doi.org/10.3390/ma11122487

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