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  • A Study on the Flood Affected Flexible Pavements in Australia

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    SultanaPUB1115.pdf (1.568Mb)
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    Version of Record (VoR)
    Author(s)
    Sultana, Masuda
    Chai, Gary
    Martin, Tim
    Chowdhury, Sanaul
    Griffith University Author(s)
    Chowdhury, Sanaul H.
    Chai, Gary K.
    Sultana, Masuda
    Year published
    2015
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    Abstract
    Roads were one of the most valuable assets damaged during the devastating flood of January, 2011 in South-East Queensland. Research by ARRB Group and Griffith University, with Austroads funding, was initiated in early 2013 to evaluate the impacts of extreme weather events such as flooding and frequent heavy rainfall on pavement deterioration. The research examines the structural and functional performance of flood affected flexible pavements using the Falling Weight Deflectometer (FWD) and surface condition data sourced from Brisbane City Council and Roads and Maritime Services of New South Wales, Australia. This paper ...
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    Roads were one of the most valuable assets damaged during the devastating flood of January, 2011 in South-East Queensland. Research by ARRB Group and Griffith University, with Austroads funding, was initiated in early 2013 to evaluate the impacts of extreme weather events such as flooding and frequent heavy rainfall on pavement deterioration. The research examines the structural and functional performance of flood affected flexible pavements using the Falling Weight Deflectometer (FWD) and surface condition data sourced from Brisbane City Council and Roads and Maritime Services of New South Wales, Australia. This paper presents the findings on the structural and functional performance of flood affected flexible pavements in Australia. A comparison is presented of before and after flood data on flooded and non-flooded sections of the pavements. The results indicate that the flood affected pavements suffer losing their structural strength faster than their normal deterioration rate. A reduction in the subgrade CBR value up to 67% and structural number up to 50% has been observed. The reductions in the subgrade CBR and structural number would not be so high and rapid if the roads were to deteriorate under normal weather conditions without the flooding event. However, re-testing a number of the pavement sections, several months or years after the flooding, shows a consistent trend of gaining the strength mainly due to the post-flooding rehabilitation works. Preliminary analyses conducted on the surface condition of flood affected pavements indicate a marginal loss of roughness, rutting and cracking. This research will improve the road network condition prediction for flooding events and is expected to identify the adaptation options to reduce the flooding impacts in terms of cost at road network level.
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    Conference Title
    Proceedings of the 9th International Conference on Road and Airfield Pavement Technology
    Publisher URI
    http://conference.upm.edu.my/ICPT?
    Copyright Statement
    © 2015 National University of Singapore. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the conference's website for access to the definitive, published version
    Subject
    Transport Engineering
    Publication URI
    http://hdl.handle.net/10072/123525
    Collection
    • Conference outputs

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