Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/35813
Title: Experimental study on CO2 curing for enhancement of recycled aggregate properties
Authors: Zhan, BJ
Poon, CS 
Liu, Q
Kou, SC
Shi, CJ
Keywords: Recycled aggregate
CO2 curing
Improvement
Properties
Issue Date: 2014
Publisher: Elsevier
Source: Construction and building materials, 2014, v. 67, p. 3-7 How to cite?
Journal: Construction and building materials 
Abstract: In this paper, the results of an experimental program on studying the use of a carbonation process to enhance the properties of recycled aggregates are presented. Hardened concretes prepared by using different water-to-cement ratios in the laboratory, were crushed to produce recycled aggregates with different particle sizes. Before and after the laboratory carbonation process, the physical properties of the recycled aggregate, including water absorption and density were determined. The extent of CO2 curing of the recycled aggregate was quantified by assessing the carbonation percentage of the aggregates. Carbonation resulted in reduction in water absorption values and increase in density and these showed that the properties of recycled aggregate were improved. The factors influencing the CO2 curing process, including curing time, particle size and moisture contents of the recycled aggregate, were investigated.
URI: http://hdl.handle.net/10397/35813
ISSN: 0950-0618
DOI: 10.1016/j.conbuildmat.2013.09.008
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