Road Materials and Pavement Design, 2024 (SCI-Expanded)
This study investigates the freeze–thaw (F-T) resistance of pervious concrete mixtures produced with various aggregates and fibres. Moreover, compressive strength, Bohme abrasion resistance, and infiltration rate tests were performed along with the X-ray computed tomography (CT) and scanning electron microscope (SEM) analyses to evaluate the mixtures’ performance and microstructural properties. Basalt, limestone, travertine, and pumice aggregates were used with steel and polypropylene fibres. The findings revealed that aggregate and fibre contents had crucial importance on F-T resistance. While pervious concretes containing basalt failed by the 7th day, those with limestone remained stable after 56 F-T cycles. Polypropylene fibre notably enhanced F-T resistance by holding the matrix together and increased the infiltration rate up to 3-fold. Steel fibre significantly improved mechanical properties, while polypropylene fibre had limited impact. Combining steel and polypropylene fibres is recommended to achieve superior mechanical properties, high F-T resistance, and optimal infiltration in pervious concrete.