Abstract
To discuss the application of porous road materials in sponge city construction. The effect of porosity on mechanical properties was observed by an analysis of the porosity and mechanical properties of 5 groups of porous asphalt concrete test pieces at 15℃ and 20℃ respectively and by comparison of porosity and mechanical properties between these 5 groups. As porosity increases, the mechanical properties of test pieces decrease; as temperature rises, their mechanical properties decrease, too. This could be used for reference during material selection in subsequent sponge city construction. Porous road materials could act as the sponge in sponge city, and their selection is closely associated with their mechanical properties. In short- term application, these materials would contribute to drainage and sewage control; in long-term application, they would save on expenses and benefit to urban construction.
