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<p>Rainfall patterns are changing due to climate change, leading to challenges in pavement design and stability, especially when traditional approaches use only historical rainfall data. This study focuses on developing updated Intensity–Duration–Frequency (IDF) curves for Bangalore Urban using both observed data from the India Meteorological Department and bias-corrected climate projections from CMIP6 models. The results show an expected increase of about 7% in rainfall intensity under future climate scenarios. Two pavement sections were designed based on the Indian Roads Congress guidelines; one using conventional layers (as per IRC:37-2018) and another using a reduced granular layer reinforced with geogrid and a geocomposite drainage layer (as per IRC: SP:59-2019). Transient seepage analysis showed that the section with geosynthetics (150&#xa0;mm granular sub-base and 5.2&#xa0;mm geocomposite) performed better in terms of reducing pore water pressure compared to the conventional 200&#xa0;mm section. Life Cycle Assessment (LCA) using ReCiPe 2016 Endpoint method further confirmed that geosynthetic-reinforced pavements reduced environmental impacts by over 50% in terms of resource use, human health, and ecosystem quality. The study concludes that using climate-adjusted IDF curves and geosynthetics in pavement design improves both hydraulic performance and sustainability, making it a reliable option under changing climate conditions. </p>

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Approach to Climate Resilient and Sustainable Design of Pavement

  • 期刊论文

  • 发表日期：

    2025年11月12日

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  • Nikhil Anand,
  • P. S. Anjali,
  • G. L. Sivakumar Babu

摘要

Rainfall patterns are changing due to climate change, leading to challenges in pavement design and stability, especially when traditional approaches use only historical rainfall data. This study focuses on developing updated Intensity–Duration–Frequency (IDF) curves for Bangalore Urban using both observed data from the India Meteorological Department and bias-corrected climate projections from CMIP6 models. The results show an expected increase of about 7% in rainfall intensity under future climate scenarios. Two pavement sections were designed based on the Indian Roads Congress guidelines; one using conventional layers (as per IRC:37-2018) and another using a reduced granular layer reinforced with geogrid and a geocomposite drainage layer (as per IRC: SP:59-2019). Transient seepage analysis showed that the section with geosynthetics (150 mm granular sub-base and 5.2 mm geocomposite) performed better in terms of reducing pore water pressure compared to the conventional 200 mm section. Life Cycle Assessment (LCA) using ReCiPe 2016 Endpoint method further confirmed that geosynthetic-reinforced pavements reduced environmental impacts by over 50% in terms of resource use, human health, and ecosystem quality. The study concludes that using climate-adjusted IDF curves and geosynthetics in pavement design improves both hydraulic performance and sustainability, making it a reliable option under changing climate conditions.