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Influence of
vehicular positions and thermal effects on structural
behaviour of concrete pavement
Mostafa Yousefi Darestani, David P. Thambiratnam, Andreas Nataatmadja and Daksh Baweja |
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Vol. 3 (2008), No. 3, 567–589
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Abstract |
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Structural response of concrete pavements is influenced by the position of the axle loads and if critical load positions are not considered in concrete pavement analysis, the design may be inadequate and lead to early failure of the pavement. Whilst there has been a great deal of research conducted on concrete pavement performance and deterioration under vehicular loads and environmental forces, there is a lack of adequate information on effects of vehicular load positions on pavement responses. Critical positions of different axle groups in uncurled and curled jointed concrete pavement with different configurations were determined in the current study. Results indicate that structural performance of concrete pavements is significantly affected by boundary conditions between concrete slab and base. Corner loading was found to be critical in bonded concrete pavement. Corner loading is also critical when a separation occurs between unbonded concrete slab and base. Furthermore, the benefits offered by unbonded boundary condition cease at a certain differential temperature. Hence, a particular care needs to be considered in projects constructed in extremes of heat or cold. In presence of high differential temperature together with axle loading, joint faulting in unreinforced concrete pavements is affected by concrete slab thickness. |
Keywords
concrete pavement, concrete, tensile stress, thermal
analysis, critical position, axle group loads, crack
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Milestones
Received: 28 August 2006
Accepted: 14 December 2007
Published: 1 May 2008
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Authors |
| Mostafa Yousefi Darestani | |
| School of Urban Development Queensland University of Technology 2 George Street Brisbane, QLD 4001 Australia |
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| David P. Thambiratnam | |
| School of Urban Development Queensland University of Technology 2 George Street Brisbane, QLD 4001 Australia |
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| Andreas Nataatmadja | |
| School of Urban Development Queensland University of Technology 2 George Street Brisbane, QLD 4001 Australia |
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| Daksh Baweja | |
| Rinker Australia Tower B, Level 8 799 Pacific Highway Chatswood, NSW 2067 Australia |
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