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Behaviour of tyre reinforced unsealed pavement

Ali, Rehaan, Nataatmadja, Andreas, & Gudimetla, Prasad V. (2007) Behaviour of tyre reinforced unsealed pavement. In Ameratunga, Jay, Taylor, Brett, & Patten, Matthew (Eds.) 10th Australia New Zealand Conference on Geomechanics, 21-24 October 2007, Brisbane.

Abstract

Recently, tyre-reinforced unsealed pavements had been constructed in a number of sites throughout Australia. The use of partially cut-up waste tyres within the base layer was expected to produce (i) less lateral movement of base aggregate; (ii) increase in modulus through confinement; (iii) improved vertical stress distribution on the subgrade due to increased base modulus or slab action and (iv) reduced shearing in the top of the subgrade. This paper presents the results of preliminary study to confirm these expectations through experimental testing and finite element analyses.

In the experimental testing, a box test was used to investigate the performance of a model unsealed pavement, reinforced with a tyre. Surface and subsurface measurements indicate that the tyre and base aggregate worked together and acted as a flexible foundation. Finite element analysis confirms that tyre reinforcements help reduce the subgrade vertical pressure which provides a lucrative alternate tyre reinforced pavements that can be constructed over soft subgrades.

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ID Code: 12370
Item Type: Conference Paper
Additional URLs:
Keywords: Unsealed road, pavement, reinforcement, recycled tyre, base, experimental test, finite element modelling
ISBN: 9780646479743
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > RESOURCES ENGINEERING AND EXTRACTIVE METALLURGY (091400) > Geomechanics and Resources Geotechnical Engineering (091402)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Copyright Owner: Copyright 2007 Australian Geomechanics Society
Copyright Statement: Reproduced in accordance with the copyright policy of the publisher.
Deposited On: 12 Feb 2008
Last Modified: 29 Feb 2012 23:40

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