Influence of matrix and pore system characteristics on the durability of pervious concrete

The application of pervious concrete (PC) is still limited primarily due to the three challenges it faces: limited strength, vulnerability to clogging and durability concerns. The last challenge is assessed in this research. Especially in the cold northern area where cyclic freeze-thaw (F-T) is not uncommon, it is necessary to understand the F-T performance and corresponding failure mechanism of PC. In this research, PCs varying in matrix type (normal strength matrix, high strength matrix and ultra-high strength matrix), pore system characteristics (void size and tortuosity) and fiber reinforcement (reinforced and non-reinforced) were proportioned. The influence of matrix, pore system characteristics and fiber reinforcement on the F-T durability of PC is investigated and potential F-T failure mechanisms are discussed.