Recycled aggregates (RA) are frequently obtained from various
unknown sources, which caused variation in properties among recycled aggre-
gates concrete (RAC). This paper investigated the macro and microscopic proper-
ties of RAC prepared with RAs originated from different parent concretes with
90-day strength ranging from 30 MPa to 100 MPa. These parent concretes were
prepared in advance and crushed to produce RA of distinct qualities. The attached
mortar content can reach up to 69% in the concrete with highest strength grade.
The microscopic investigation on different RAC was conducted with the X-ray
Micro-Computed Tomography scanning technique and image process. Experi-
mental results showed that the properties of RA derived from various parent
concrete varied because of the amount of residual mortar. The development of
mechanical properties and chloride-ion penetration of RACs all followed a bino-
mial trend with the strength grades of the parent concrete because of the different
quantity and quality of RAs.
Cite This Article
APA Style
Duan, Z., Han, N., Singh, A., Xiao, J. (2020). Multi-scale investigation on concrete prepared with recycled aggregates from different parent concrete. Journal of Renewable Materials, 8(11), 1375-1390. https://doi.org/10.32604/jrm.2020.013044
Vancouver Style
Duan Z, Han N, Singh A, Xiao J. Multi-scale investigation on concrete prepared with recycled aggregates from different parent concrete. J Renew Mater. 2020;8(11):1375-1390 https://doi.org/10.32604/jrm.2020.013044
IEEE Style
Z. Duan, N. Han, A. Singh, and J. Xiao "Multi-Scale Investigation on Concrete Prepared with Recycled Aggregates from Different Parent Concrete," J. Renew. Mater., vol. 8, no. 11, pp. 1375-1390. 2020. https://doi.org/10.32604/jrm.2020.013044