Porous sidewalks help cooling: study
Taipei Times
Excerpt
Sep 20, 2021
Porous sidewalks installed in Taipei last year have been found to reduce surface temperatures by up to 3°C in addition to absorbing excessive runoff, researchers said on Thursday.
The Taipei City Government has been experimenting with new building materials since launching a “sponge city” initiative in 2015 to improve drainage and flood controls in the capital.
Seeking to reduce runoff along Zhongxiao E Road, which is prone to flooding, the city replaced its asphalt and concrete sidewalks with a more porous material.
To test the effectiveness of the renovation completed late last year, researchers from the National Taipei University of Technology’s Water Environment Research Center installed a sensor in front of Zhongxiao Xinsheng MRT Station Exit 4 to monitor how much water was absorbed by the pavement.
They discovered that the material was not only effective at reducing runoff, but also had a lower temperature than other types of pavement.
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