Funding/Research Supports
- Mitacs (Accelerate Program)
- Industry partner: Last20 Incorporated
Project Status
Completed
Project Overview
This research identifies pothole formation as a critical pavement distress issue in cold regions, driven largely by freeze–thaw cycles, moisture infiltration, and repeated traffic loading. In Ontario, fluctuating winter temperatures allow water to penetrate pavement layers, freeze and expand, and subsequently weaken the structure during thawing periods. These processes accelerate surface deterioration, leading to potholes that compromise road safety, increase vehicle operating costs, and strain maintenance budgets.
To address these challenges, the research program focuses on developing durable and cost-effective pothole patching solutions tailored to cold climate conditions. It investigates a range of asphalt materials, including conventional hot and cold mixes, alongside innovative alternatives such as reclaimed asphalt pavement (RAP) and waste plastic-based aggregates derived from single-use materials. The study also evaluates different repair techniques, including throw-and-roll and semipermanent methods, to determine their effectiveness under varying environmental and operational conditions.
The goal is to enhance the resilience and sustainability of Ontario’s road infrastructure by identifying optimal combinations of materials and repair techniques. The program examines key distress mechanisms such as moisture damage, loss of cohesion, and structural instability, offering practical recommendations for improved material selection and application methods. The expected outcomes include longer-lasting pothole repairs, reduced maintenance frequency, improved road safety, and lower lifecycle costs. In addition, the integration of recycled and waste materials contributes to sustainability by minimizing resource consumption and emissions. The project also supports the development of highly qualified personnel (HQP), equipping future engineers with advanced knowledge in pavement materials, maintenance strategies, and sustainable infrastructure practices.