Clogging in pervious concrete pavements (PCPs) is one of the significant functional distresses. Clogging is influenced by various factors such as pore structure, size distribution of clogging material, location of PCPs, etc. With the increasing interest in the pervious concrete (PC)-related research, different variants of PC have developed in the past studies. This study investigates the clogging and rejuvenation behavior of three distinct variants of PC: conventional PC (CPC), 2-layered PC (2L-PC), and clogging resistance (CR) PC (CRPC). An innovative method was proposed in this study to fabricate CRPC slabs in the laboratory, which can be extended to the field as well in the form of blocks. Clogging behavior of CPC and 2L-PC cylinders after 10 clogging cycles indicated that clogging materials get easily deposited in the pore structure of CPC, while 2L-PC was able to show 50% higher rejuvenation compared to CPC under similar conditions. Further, infiltration tests on small-scale slabs of CPC, 2L-PC, and CRPC indicated that CRPC had almost 7.5 times higher infiltration rate compared to CPP and 2L-PC after 20 clogging cycles. However, CRPC, due to vertical pores, easily allowed the clogging material to get deposited in the reservoir layer, initiating clogging from the bottom of the reservoir layer. Overall, this study highlights that clogging is not only a surface phenomenon but also takes place at the lower layer of PCPs, depending on the type of PC mixtures used on the surface.
Patil et al. (Sun,) studied this question.