Effects of moisture content on resilient properties of recycled concrete aggregates (RCAs)

Gallage, Chaminda, Jayakody, Shiran, & Ramanujam, Jothi (2014) Effects of moisture content on resilient properties of recycled concrete aggregates (RCAs). In Hossain, Zakaria & Shiau, Jim (Eds.) Proceedings of Fourth International Conference – GEOMATE 2014 : Geotechnique, Construction Materials & Environment, The GEOMATE International Society, Brisbane, Australia, pp. 394-399.


In pavement design, resilient modulus of a pavement material is one of the key design parameters. Resilient modulus of a granular pavement material can be measured using repeated load Triaxial (RLT) test or estimated using empirical models. For conventional granular pavement materials, a significant amount of resilient modulus data and empirical models to estimate this key design parameter are available. However, RCA is a relatively new granular pavement material and therefore no such data or empirical models are available. In this study, a number of RLT tests were conducted on RCA sample to investigate the effects of moisture content on its resilient modulus (Mr). It was observed that the resilient modulus of RCA increased with a number of loading cycles but decreased as the moisture content was increased. Further, using RLT test results, empirical models to estimate the resilient modulus of RCA were enhanced and validated.

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ID Code: 79878
Item Type: Conference Paper
Refereed: Yes
Keywords: Repeater Load Triaxial, Recycled Concrete Aggregates, Resilient Modulus, Water Content
ISBN: 9784990595838
Divisions: Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2014 The GEOMATE International Society
Deposited On: 08 Jan 2015 02:16
Last Modified: 15 Jan 2015 06:54

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