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A new combination of permeable pavement and wet pavement was devised to mitigate heat and damage from short duration heavy rainfall. The use of fine sand in the wet pavement base course improved the maximum water storage capacity, and the use of porous glass material improved the capillary rise height. The irradiation tests showed lower surface temperatures for the specimens with higher water content in the lower part of the block, followed by the specimens with impregnated blocks. In the outdoor test, the cross-sectional configuration with higher moisture content in the lower part of the block had the lowest surface temperature. When artificial water supply was applied to the permeable pavement, the surface temperature of the wet pavement was reduced by approximately 2–3 °C.

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Development of Pavement with Road Surface Temperature Reduction and Rainwater Storage Effect

  • 会议论文

  • 发表日期：

    2025年

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  • Ryohei Nagano,
  • Hideo Fujii,
  • Sakura Kakefuda,
  • Koichiro Ibaraki

摘要

A new combination of permeable pavement and wet pavement was devised to mitigate heat and damage from short duration heavy rainfall. The use of fine sand in the wet pavement base course improved the maximum water storage capacity, and the use of porous glass material improved the capillary rise height. The irradiation tests showed lower surface temperatures for the specimens with higher water content in the lower part of the block, followed by the specimens with impregnated blocks. In the outdoor test, the cross-sectional configuration with higher moisture content in the lower part of the block had the lowest surface temperature. When artificial water supply was applied to the permeable pavement, the surface temperature of the wet pavement was reduced by approximately 2–3 °C.