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Author: search.filters.author.Rattanachot, Wit

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    Adaptation strategies of transport infrastructures to global climate change
    (2015-07-01)
    Rattanachot, Wit
    ;
    Wang, Yuhong
    ;
    Chong, Dan
    ;
    Suwansawas, Suchatvee
    Scientific records provide clear evidence of rising atmospheric greenhouse gases (GHG) concentrations. Global warming and rising extreme weather events are believed to be a result. Besides proactively combating global climate change, transport agencies may need to develop strategies for better preparedness of the impacts of climate change. This is particularly important for certain regions that are more vulnerable to the potential damages caused by climate change. A methodological framework for developing such strategies is presented in the paper. The framework is illustrated through two examples: the management of rural roads in Thailand where the vast road network is being threatened by increasing floods and rising sea levels and the improvement of pavement design strategies for expressways along the coast of Hong Kong. Adaption measures are proposed for the highway agencies to address the challenges caused by climate change.
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    Improvement of pavement design and management for more frequent flooding caused by climate change
    (2015-04-01)
    Wang, Yuhong
    ;
    Huang, Yu
    ;
    Rattanachot, Wit
    ;
    Lau, K. K.
    ;
    Suwansawas, Suchatvee
    Climatological records show a trend of the increasing occurrence of extreme weathers caused by global climate change. One form of extreme weathers is heavy rainfall which, combined with rising sea levels, made highways in some subtropical regions susceptible to flooding. Flooding in these regions causes noticeable damages to flexible highway pavements. However, little research has been conducted to quantify such damages and develop possible mitigation measures. This study developed a method to incorporate flood risk into the structural analysis of flexible pavements, examined the effects of flooding on pavement materials and structures through laboratory tests and design simulations, and recommended better pavement design and management strategies. Flexible pavement is found to be significantly affected by flooding. Future climate change and the resultant increase of flooding frequency pose a serious challenge to the reliability of flexible highway pavements. To mitigate the detrimental effects of flooding, pavement thickness and drainage system need to be adequately designed and post-flood traffic control may need to be imposed.