Assessment of recycled concrete aggregate for road base and sub-base

Jayakody, S., Gallage, C., & Kumar, A. (2012) Assessment of recycled concrete aggregate for road base and sub-base. In Hossain, Md. Zakaria & Huat, Bujang B.K. (Eds.) Proceedings of the Second International Conference on Geotechnique, Construction Materials and Environment, The GEOMATE International Society, Kuala Lumpur, Malaysia, pp. 575-579.


Population increase and economic developments can lead to construction as well as demolition of infrastructures such as buildings, bridges, roads, etc and used concrete is the main waste product of them. Recycling of waste concrete to obtain the recycled concrete aggregates (RCA) for base and/or sub-base materials in road construction is a foremost application to be promoted to gain economical and sustainable benefits. As the mortar, bricks, glass and asphalt present in different constituents in RCA, it exhibits inconsistent properties and performance. In this study, six different types of RCA samples were subjected classification tests such as particle size distribution, plasticity, compaction test and California Bearing Ratio (CBR). Results were compared with those of the standard road materials used in Queensland, Australia and found that ‘RM1-100/RM3-0’ and ‘RM1-80/RM3-20’ samples are sitting in the margin of the minimum required specifications of base materials while others are lower than that.

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ID Code: 58168
Item Type: Conference Paper
Refereed: Yes
Keywords: Recycling, Waste Concrete, Road Materials
ISBN: 9784990595814
Divisions: Current > Schools > School of Civil Engineering & Built Environment
Current > Schools > School of Earth, Environmental & Biological Sciences
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Coyright 2012 The GEOMATE International Society
Deposited On: 13 Mar 2013 01:42
Last Modified: 17 Mar 2013 22:15

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