Assessing Clogging Phenomenon in Permeable Concrete

Permeable concrete serves as an essential material in road construction especially for quick disposal of flood water in the case of urban cities thus becoming an important component of the city drainage system. It is often subjected to clogging issues due to the ingress of particulate material within the concrete layer thereby reducing the service life of the constructed road pavement. The main focus of this paper is to study the clogging issue in the case of permeable concrete and study different methods to control and mitigate this issue. The clogging problem arises due to large size particles running alongwith rainwater and they are blocked within the porous structure of concrete. It leads to a reduction in the porosity of the concrete and hampering the utility of permeable concrete pavement. Water pressure method and suction sweeping methods are commonly used methods but their effectiveness reduces with an increase in depth of road pavement and clogging intensity. This investigation highlights the importance of appropriate concrete mixing and pouring methods to reduce tortuosity of permeable concrete.