The effect of improved pavement and vegetation to improve the thermal environment of car parks in summer
2009
Hashida, S.(Meiji Univ., Tokyo (Japan)) | Aoki, S. | Fujisaki, K. | Kajiya, R. | Sakai, K.
The purpose of this study is to clarify the effects on reducing temperature by improving the pavements and planting turf or trees. The 'water retention pavement' and the 'reflective and permeable pavement' were settled on the car park. Turf with protecting material against the weight of cars was planted on another area. In addition to these three types of surfaces, gravel surface, regular asphalt and the area under shading trees were selected as other three types of surfaces. Surface temperature and underground temperature at 7 cm depth were measured at those six types of the surface areas during summer in 2008. The lowest temperature was observed at the area under the shading tree. The next lower area was the turf. At the area of the 'water retention pavement' and the 'reflective and permeable pavement', the temperature was about 17degC higher than the area under the shading tree, but about 10degC lower than the area of the regular asphalt pavement at the hottest hours in mid summer. The globe temperatures were measured by using globe thermometers. The globe temperatures under the shading trees were almost as same as the air temperature. But the difference of globe temperature between the area under the shading tree and other area was more than 10degC during mid day hours in sunny summer days.
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