Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/21086
Title: Effect of the quality of parent concrete on the properties of high performance recycled aggregate concrete
Authors: Kou, SC
Poon, CS 
Keywords: High performance concrete
Parent concrete strength
Property UPV
Recycled aggregate
Issue Date: 2015
Publisher: Elsevier
Source: Construction and building materials, 2015, v. 77, p. 501-508 How to cite?
Journal: Construction and building materials 
Abstract: This paper presents the experimental results of a study on the effect of the quality of parent concrete (PC) on the properties of recycled aggregates (RAs) that are derived from them, and on the mechanical and durability properties of normal strength and high performance recycled aggregate concrete (NSRAC and HPRAC). PC with strength grades ranging from 30 to 100 MPa was crushed to the size of coarse aggregates (<20 mm), and then used to produce new NSRAC and HPRAC mixes. The results indicated that the compressive strength of the NSRAC and HPRAC prepared with RA derived from 80 and 100 MPa PCs was similar or slightly higher than that of natural aggregate concrete. Moreover, the concrete mixtures made with RA are derived from parent concrete with higher strength had lower drying shrinkage and higher resistance to chloride ion penetration. The RA derived from 80 and 100 MPa PCs can be used to replace 100% natural aggregates for the production of high performance concrete.
URI: http://hdl.handle.net/10397/21086
ISSN: 0950-0618
DOI: 10.1016/j.conbuildmat.2014.12.035
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