Freeze–Thaw Durability of Conventional and Novel Permeable Pavement Replacement

Abstract

Permeable concrete pavements are becoming more common as a stormwater management system to mitigate urban flooding. However, they have a number of well-defined drawbacks including low permeability, high clogging potential, and low strength and durability, notably in cold climates exposed to freezing and thawing. A new generation of high-strength clogging resistant permeable pavement replacement (CRP) has been developed, through extensive laboratory work, to address these shortcomings and advance the field of permeable pavements. This paper reports on new advances in permeable pavement systems and the performance of a range of conventional permeable concrete and the developed novel CRP of varying porosity exposed to freeze-thaw cycles. This will allow performance evaluations of both systems in a cold climate. The tests involved exposing samples to temperature varying from -20 o C to +20 o C and measuring changes in mass, area, compressive strength and ultrasonic pulse velocity after each cycle. These new results show that CRP is highly resistant to degradation caused by freeze-thaw cycles compared to conventional permeable concrete, reducing maintenance requirements and improving service-life. This study presents the first high strength clogging resistant permeable pavement replacement that is durable under frost action, these findings will support and enable wider use of permeable pavements in cold regions.

An Overview of Smart Materials and Technologies for Concrete Construction in Cold Weather

“…Ensuring proper drainage around the concrete structure can help prevent the accumulation of water and reduce the risk of freeze-thaw cycles [151]. Effective drainage systems, such as well-designed slopes, drains, and gutters, can help minimize water ingress and mitigate the risk of frost damage and early freezing [152].…”