Home > Published Issues > 2022 > Volume 11, No. 1, February 2022 >

Using the Moisture Retention Property of Recycled Coarse Aggregates for Self-Curing of High Performance Concrete

Z. Awadh, D. Dashti, S. Al-Bahar, and J. Chakkamalayath
Construction and Building Materials Program, Energy and Building Research Centre, Kuwait Institute for Scientific Research, Kuwait

Manuscript received March 21, 2021; revised July 28, 2021; accepted October 15, 2021; issue published September 28, 2021.

Abstract—The influence of using saturated surface dry recycled coarse aggregates (SSD-RCA), as replacement of normal coarse aggregates (NCA) on the properties of hardened concrete is discussed in this paper. Concrete mixes were prepared using two different mixing procedures, and by replacing normal coarse aggregates (NCA) with 10% and 30% recycled coarse aggregates. The self-curing curing of concrete due to the incorporation of RCA was evaluated by determining the compressive strength, splitting tensile strength, water absorption and percentage of voids of concrete under two different curing conditions. The compressive and the splitting tensile strength were comparable for both air and water curing mixes at 28 days with 10% and 30% replacement, indicating the influence of self- curing effect through the use of RCA. This study exploits the benefits of rather undesirable property of RCA, such as high moisture retention property, or in another word, high water absorption, as internal curing water for strength development, in order to facilitate the recycling of Construction and Demolition (C&D) waste. 

Index Terms— construction and demolition waste, curing, normal coarse aggregate, saturated surface dry, strength, water absorption

Cite: Z. Awadh, D. Dashti, S. Al-Bahar, and J. Chakkamalayath, "Using the Moisture Retention Property of Recycled Coarse Aggregates for Self-Curing of High Performance Concrete," International Journal of Structural and Civil Engineering Research, Vol. 11, No. 1, pp. 1-5, February 2022. doi: 10.18178/ijscer.11.1.1-5

Copyright © 2022 by the authors. This is an open access article distributed under the Creative Commons Attribution License (CC BY-NC-ND 4.0), which permits use, distribution and reproduction in any medium, provided that the article is properly cited, the use is non-commercial and no modifications or adaptations are made.