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Comparison of Potential Contribution of Typical Pavement Materials to Heat Island Effect

1
National Centre for Materials Service Safety, University of Science & Technology Beijing, Beijing 100083, China
2
Joint USTB Virginia Tech Lab on Multifunctional Materials, Department Civil & Environmental Engineering, Virginia Tech, Blacksburg, VA 24061, USA
*
Authors to whom correspondence should be addressed.
Sustainability 2020, 12(11), 4752; https://doi.org/10.3390/su12114752
Received: 24 April 2020 / Revised: 5 June 2020 / Accepted: 7 June 2020 / Published: 10 June 2020
Pavement materials have significant influence on the urban heat island effect (UHIE). This paper presents a study on the potential effects of pavement materials on UHIE in a natural environment. Three typical pavement materials, including cement concrete, dense asphalt concrete and porous asphalt mixture, were selected to evaluate their anti-UHIE properties by testing. In this paper, heat island potential (HIP) is proposed as a new index to analyze the influence of pavement materials on UHIE. It is shown that the temperature inside a pavement distinctly depends on the depth, and varies, but is usually higher than the air temperature. Solar radiation in the daytime significantly contributes to the temperature of pavement surface and the upper part. The correlation becomes weak at the middle and the bottom of pavements. Among the three materials tested in this study, the anti-UHIE performance of cement concrete is significantly higher than that of the other asphalt mixtures, while the porous asphalt mixture is slightly better than the dense asphalt concrete in anti-UHIE. View Full-Text
Keywords: urban heat island; asphalt concrete mixture; cement concrete mixture; porous asphalt concrete mixture urban heat island; asphalt concrete mixture; cement concrete mixture; porous asphalt concrete mixture
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Yang, H.; Yang, K.; Miao, Y.; Wang, L.; Ye, C. Comparison of Potential Contribution of Typical Pavement Materials to Heat Island Effect. Sustainability 2020, 12, 4752.

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