;In recent years, Taiwan′s climate changing, typhoon rainfall intensity increased, paving facility load is too large, resulting in frequent flooding around. Permeable pavement allows rainwater infiltration and reduce runoff flow, delaying flood, flood control and groundwater recharge, very consistent with the concept of sustainable use of water resources. In addition, both permeable pavement evaporate water retention function and moisture in the pavement surface temperature is significantly lower than the general conventional dense graded asphalt concrete pavement, effective help to the city temperature regulation. Permeable pavement has not been widely used for general traffic and urban roads, so this research trial paved roads paved roads in urban areas, the use of porous asphalt concrete on the surface layer, the bottom is divided into pervious concrete, low-density pervious concrete and C-40 graded gravel, used to assess the ability of different materials permeable.
The results are as follows, a natural rainfall analysis, simulated rainfall and water retention test section Jieke found three (C-40 graded gravel) the best, followed by cross-section a (pervious concrete), the latter two sections (low-density porous concrete). Second, permeable pavement can effectively reduce rainfall intensity moment when the heavy rain, can slow the burden of drainage facilities. Third, by the time this study was to measure the amount of the maximum temperature and CFD simulation pavement building indoor and outdoor temperatures are lower than in other sections among the three temperatures. Fourth, permeable pavement surface temperatures are lower than the general traditional grading, can reduce the indoor temperature.
Taiwan in recent years gradually extended heavy flooding situation and the ambient temperature rises, the study found that permeable pavement when rain has reduced rainfall intensity, slow drainage, water retention and lower the temperature, the proposed flood prone areas can be laid permeable pavement.