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本文讨论蒸发冷却道路系统用路面砖的构造。这种路面系统被设计成具有滞留雨水和毛细孔吸水功能,通过夏季室外试验,对路面系统的蒸发冷却持续时间进行研究。试验结果表明:①具有拱形空隙的混凝土路面砖路面,其地表温度保持较低的持续时间为14天或更长。在白天,地表温度与空气温度之间的差值低于5℃。这是因为该路面系统有足够的保水能力,并且地表与防水层之间的距离,比路面毛细吸收高度短。②具有厚路基的道路系统,路面系统所具有的蒸发冷却持续时间大约为5天。研究表明,当从路面底侧到路表面的毛细管吸水通道被阻断之后,系统中仍有滞留水。
This article discusses the construction of pavement tiles for evaporative cooling road systems. This pavement system was designed to have retention of rainwater and capillary water absorption, and to study the duration of evaporative cooling in pavement systems through summer outdoor testing. The test results show that: ① The concrete pavement with vaulted voids has a low surface temperature duration of 14 days or longer. During the day, the difference between surface temperature and air temperature is less than 5 ° C. This is because the pavement system has sufficient water holding capacity and the distance between the surface and the waterproof layer is shorter than the capillary attraction height of the pavement. ② roadbed with thick subgrade system, the pavement system has an evaporative cooling duration of about 5 days. Research shows that there is still stagnant water in the system after the capillary water absorption channel from the bottom of the pavement to the road surface is blocked.