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1. Effect of carbonated coarse recycled concrete aggregate on the properties and microstructure of recycled concrete

Author:
Guo, Mingzhi,   et al.   ; Lu, Bao; Shi, Caijun; Cao, Zhijie; Zheng, Jianlan;     Show all 5 Authors
Source:
Journal of cleaner production 2019 v.233 pp. 421-428
ISSN:
0959-6526
Subject:
carbonation; cement; compression strength; concrete; drying; microstructure; porosity; shrinkage; water uptake
Abstract:
... The effects of carbonated coarse recycled concrete aggregate (RCA) on properties and microstructure of recycled aggregate concrete (RAC) were investigated in this study. The water absorption of 5–10 mm and 10–20 mm coarse RCA was reduced by 30% and 22%, and their corresponding apparent density increased by 4.8% and 3.2% after carbonation treatment. The compressive strength of the concrete with 50% ...
DOI:
10.1016/j.jclepro.2019.05.350