Abstract

Pervious concrete (PC) has gained important ground in civil construction in recent years due to its advantages in managing surface runoff. Numerous studies have been developed to characterize the material mechanically and hydraulically and verify compliance with standards. However, there are still some gaps in the knowledge about the hydraulic behavior of PC over time and how its properties vary with the materials that may accumulate in the internal pores. This last phenomenon is known as clogging and is one of the main factors to cause the loss of hydraulic serviceability of this material. This hinders its diffusion around the world since the process of this phenomenon is neither completely known nor contemplated in the standards. Therefore, considering these gaps in knowledge, this review intends to clarify the most important aspects of the phenomenon of clogging and contribute to the knowledge of the mechanism of permeability decrease of the material. Moreover, this paper seeks to identify which variables influence permeability variation over time and to present the models proposed to predict permeability degradation in PC, as well as some maintenance methodologies to permeability recovery.