Experimental study on CO2 curing for enhancement of recycled aggregate properties

Baojian Zhan, Chi Sun Poon, Qiong Liu, Shicong Kou

Research output: Journal article publicationConference articleAcademic researchpeer-review

2 Citations (Scopus)

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 recycled aggregate, were investigated.

Original languageEnglish
Article numbere259
JournalSustainable Construction Materials and Technologies
Volume2013-August
Publication statusPublished - 1 Jan 2013
Event3rd International Conference on Sustainable Construction Materials and Technologies, SCMT 2013 - Kyoto, Japan
Duration: 18 Aug 201321 Aug 2013

Keywords

  • Carbonation
  • CO2 curing
  • Mechanical properties
  • Recycled aggregate

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Materials Science(all)

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