 Effects of recycled concrete aggregates on properties of asphalt concreteSumeda Paranavithana and Abbas Mohajerani Resources, Conservation & Recycling, 2006, vol. 48, issue 1, 1-12 Abstract: Recycled concrete aggregates (RCA) are produced by crushing demolished concrete elements. RCA differ from fresh aggregates due to the cement paste attached to the surface of the original natural aggregates after the process of recycling. This highly porous cement paste and other contaminations contribute to the lower particle density and higher porosity, variation in the quality of the RCA and the higher water absorption. This paper presents some of the results of an investigation on the possible application of RCA in asphalt concrete. It was found that all the volumetric properties (except the percentage of air voids), resilient modulus and creep values of asphalt specimens containing RCA as coarse aggregates were relatively lower compared with the values found for similar specimens made with only fresh aggregates. Some of these measured properties were within the acceptable recommended limits, for the RCA sample used in this study. Keywords: Recycled concrete aggregates; Recycled materials; Waste management; Construction and demolition waste; Asphalt mix design; Pavement materials; Crushed aggregates; Volumetric and mechanical properties (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:recore:v:48:y:2006:i:1:p:1-12 DOI: 10.1016/j.resconrec.2005.12.009 Access Statistics for this article Resources, Conservation & Recycling is currently edited by Ming Xu More articles in Resources, Conservation & Recycling from Elsevier |
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