Effects of recycled concrete aggregate on the fresh properties of self-consolidating concrete

Safiuddin, M.D. and Salam, M.A. and Jumaat, Mohd Zamin (2011) Effects of recycled concrete aggregate on the fresh properties of self-consolidating concrete. Archives of Civil and Mechanical Engineering, 11 (4). pp. 1023-1041. ISSN 16449665,

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Abstract

Concrete wastes are generally delivered to the landfill sites for disposal. Due to increasing charges of landfill and scarcity of natural coarse aggregate (NCA), recycled concrete aggregate (RCA) derived from concrete wastes is growing interest in construction industry. In the present study, RCA was used as partial and full re-placements of NCA to produce self-consolidating concrete (SCC). Different SCC mixes were produced with RCA substituting 0, 30, 50, 70, and 100 NCA by weight. The water to cement (W/C) ratio and high-range water reducer (HRWR) dosage were kept the same for all concretes. The effects of RCA on the key fresh properties such as filling ability, passing ability, and segregation resistance of SCC were investigated. The test results revealed that the filling ability and passing ability of SCC were improved for 30 and 50 RCA. The SCC mixes with 30 and 50 RCA also possessed adequate segregation resistance. In addition, strong correla-tions were observed for filling ability, passing ability, and segregation resistance. The overall test results suggest that RCA can be used to produce SCC substituting up to 50 NCA without affecting the key fresh properties of concrete.

Item Type:	Article
Funders:	UNSPECIFIED
Additional Information:	Export Date: 6 January 2013 Source: Scopus Language of Original Document: English Correspondence Address: Safiuddin, M.D.; Department of Civil and Environmental Engineering, Faculty of Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON, N2L 3G1, Canada References: (2009) Standard specification for concrete aggregates, , ASTM C 33 Annual Book of ASTM Standards, American Society for Testing and Materials, Philadelphia, USA; (2009) Standard test method for static segregation of self-consolidating concrete using column technique, , ASTM C 1610/C 1610M: Annual Book of ASTM Standards, American Society for Testing and Materials, Philadelphia, USA; (2009) Standard test method for slump flow of self-consolidating concrete, , ASTM C 1611/C 1611M: Annual Book of ASTM Standards, American Society for Testing and Materials, Philadelphia, USA; Brameshuber, W., Uebachs, S., Practical experience with the application of self-compacting concrete in Germany (2001) Proceedings of the Second International Symposium on Self-Compacting Concrete, pp. 687-695. , COMS Engineering Corporation, Tokyo, Japan; 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Uncontrolled Keywords:	Filling ability Passing ability Recycled concrete aggregate Segregation resistance Self-consolidating concrete
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Faculty of Engineering
Depositing User:	Mr Jenal S
Date Deposited:	25 Apr 2013 01:31
Last Modified:	05 Feb 2020 04:36
URI:	http://eprints.um.edu.my/id/eprint/5924

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