Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/23962
Title: CO2 curing for improving the properties of concrete blocks containing recycled aggregates
Authors: Zhan, B
Poon, C 
Shi, C
Keywords: CO2 curing
Concrete blocks
Properties
Recycled aggregate
Issue Date: 2013
Publisher: Pergamon Press
Source: Cement and concrete composites, 2013, v. 42, p. 1-8 How to cite?
Journal: Cement and concrete composites 
Abstract: A CO2 curing process was adopted to cure concrete blocks made with recycled aggregates. Non-load- and load-bearing blocks were prepared with 0%, 50% and 100% recycled aggregate to replace natural aggregate. The blocks were then placed in a pressurized 100% CO2 curing chamber for 6, 12 and 24 h. The temperature and relative humidity inside the chamber were monitored, and the moisture loss and CO2 curing degree were determined by a weighing method. After the curing process, the strength and drying shrinkage of the CO2 and moist cured blocks were measured. The CO2 cured blocks attained higher compressive strength and lower drying shrinkage than the corresponding moist cured blocks. However, curing time and amount of recycled aggregate present in the blocks had insignificant effects on the strength gain and CO2 curing degree.
URI: http://hdl.handle.net/10397/23962
ISSN: 0958-9465
EISSN: 1873-393X
DOI: 10.1016/j.cemconcomp.2013.04.013
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