Paper Title:
Carbonation Behavior of Recycled Aggregate Concrete under Loading
  Abstract

A study on carbonation resistance of recycled aggregate concrete (RAC) subjected to different loading level was carried out. Three series of concrete mixtures were prepared with loading level of 0.5, 0.8, and 1.2 of ultimately tensive strength of concrete. The coarse recycled aggregate was used as 30%, 60% and 90% replacements of coarse natural aggregate and fine recycled aggregate as 10%, 20%, and 30% replacements of fine natural aggregate. Moreover, the fly ash and slag were employed as 15%, 25%, and 35% addition of cement. Although the action of the tensile stress had a negative effect on the carbonation resistance of RAC, it was found that the addition of fly ash and slag was able to mitigate this detrimental effect. The carbonation depth would increase with an increasing loading level and reduce when increasing the sand ratio.

  Info
Periodical
Advanced Materials Research (Volumes 250-253)
Edited by
Guangfan Li, Yong Huang and Chaohe Chen
Pages
779-782
DOI
10.4028/www.scientific.net/AMR.250-253.779
Citation
P. H. Zhu, X. J. Wang, J. C. Feng, "Carbonation Behavior of Recycled Aggregate Concrete under Loading", Advanced Materials Research, Vols. 250-253, pp. 779-782, 2011
Online since
May 2011
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Price
$32.00
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