Abstract
Pavement with water retentive materials is one of the effective countermeasures to urban heat island. But there is a problem that the evaporation performance of the materials deteriorates due to unavailable residual water in the pore structure. As a measure of solving the problem, using the granular porous materials is suggested. In this paper, granular tuff loams with different particle sizes are used for experiment of drying test with thermohygrostat chamber, and the effect of particle size to evaporation performance of the material is evaluated.
