EXAMINATION OF ROAD SURFACE TEMPERATURE CONTROL FOR CONCRETE PAVEMENT BY CIRCULATING HEAT MEDIUM INSIDE THE PAVEMENT

Abstract

 In this study, a concrete pavement with a heat dissipation pipe buried was constructed in the university campus, and the influences on the heat medium’s type, temperature and the cover thickness of the heat dissipation pipe to both the road surface temperature and the anti-freezing effectiveness were investigated. As a result, the surface temperature rising in summer and snow in winter can be suppressed thorough water, which is stored in an outside tank and is circulated inside the pavement. Furthermore, it is obviously concluded that there is no snow left above the pavement in case of about 10℃ water circulating even if the cover thickness of the pipe is 70mm in the climate of Koriyama Fukushima. Moreover, according to 3D FEM analysis, it is suggested that a suitable water temperature would have an advantage on decreasing the surface temperature and anting-freezing of pavement surface.