Modelling of Reinforced Asphalt Products for Road Applications

Abstract:

New technology of reinforcement materials in asphalt overlays can offer a potentially cost effective solution for treating cracked pavements. To date, however, there is no design process allowing the use of available reinforcement products in road applications in Australia; whereas overseas design procedures are not readily available. A new 3D finite element (FE) analysis procedure was considered where reinforced asphalt layer is modelled as a thin 3D compound non-homogeneous layer which is then converted into a 3D orthotropic membrane. This procedure was used to analyse performance of three reinforcing products for road applications in Australia and results indicated that it is possible to predict and compare “retard reflection cracking” performance of various reinforced products.

• Periodical: Materials Science Forum (Volumes 654-656)
• Pages: 2672-2675
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.654-656.2672
• Online since: June 2010
• Authors: Binh T. Vuong, Sing Ki Choi, Zahid Hoque
• Keywords: 3D Finite Element Method, 3D Orthotropic, Anisotropy, Asphalt Overlay, Computer Model, Constitutive Model, Elastic Modulus, Isotropy, Linear Elastic, Nonlinear Elastic, Pavement Design, Poisson's Ratio, Reflective Cracking, Reinforcement Material

References

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[2] Austroads: Guide to Pavement Technology - Part 2: Pavement Structural Design (Austroads Publication No. AGPT02/08, Sydney 2008).

[3] Z. Hoque and B. Vuong: Reinforced Asphalt for Managing Reflection Cracks on the RTA Road Networks. Road and Traffic Authority of New South Wales, Sydney (2009).

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DOI: 10.1177/0361198106194900104

[7] A.H. De Bondt and A. Scarpas: Design of reinforced overlays, Journal of the Transportation Research Board, TRR 1949 (2006).

[8] B. Vuong and X. Choi: Modelling of responses of road pavements containing reinforced materials (Report N0 0587, ARRB Group Ltd, Melbourne, Australia 2009).

[9] B. Vuong: Validation of a 3D non-linear finite element model for predicting response and performance of granular pavements with thin bituminous surfaces under heavy vehicles. Road and Transport Research. Vol: 18, No: 1, ARRB Group Ltd, Melbourne, Australia (2008).