Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 23, Issue 2, Pages 1163-1167Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2008.06.007
Keywords
Aggregate; Compressive strength; Concrete; Recycled; Tensile strength; Waste
Categories
Funding
- AUS
- American University of Sharjah
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Many structures in the middle-east's Gulf region are now either reaching the end of their design life or were not constructed according to the specifications. Demolition or maintenance work on such structures results in large amount of concrete rubbles. Recycling concrete wastes will lead to reduction in valuable landfill space and savings in natural resources. The objective of this study is to investigate the strength of concrete made with recycled concrete coarse aggregate. The variables that are considered in the study include the source of the recycled concrete and target concrete strength. The toughness and soundness test results on the recycled coarse aggregate showed higher percentage loss than natural aggregate, but remained within the acceptable limits. The compressive and splitting tensile strengths of concrete made with recycled coarse aggregate depend on the mix proportions. In general, the strength of recycled concrete can be 10-25% lower than that of conventional concrete made with natural coarse aggregate. (C) 2008 Elsevier Ltd. All rights reserved.
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