Multiscale investigation of imbibition, drainage and drying in macroporous media

Abstract eng:
We present the investigation of imbibition, drainage and drying in porous asphalt (PA), a macroporous material with a wide range of pore sizes ranging from microns to millimeters. In macroporous media, due to the presence of large pores, gravity becomes the most important driving force for liquid transport and consequently the transport behavior of PA is very different from that of microporous materials. To obtain a fiindamental understanding of a highly complex media like PA, experiments, simulations and modeling are performed at a variety of material scales to investigate the physics of air and water transport during imbibition, drainage and drying in PA with an overall objective of predicting the residence time of water in PA under specific environmental conditions.

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