New Concrete Renewal Technique: Key to Solving Potholes?
Given the harshness of Canadian winters, Canadian roads are constantly in need of repairs. Cracked expansion joints leading to excess moisture from rain or melting snow getting into these joints, and then inevitably causing potholes, is a common occurrence at the hands of the freeze-thaw cycles that accompany the winter weather. In response to this problem, new innovative repair methods that would allow the pavement to better withstand harsh winter conditions are constantly being explored.
Minneapolis in particular, a state with a similar winter to that of most of Canada, is exactly that through their 2017 “Concrete Street Rehabilitation Program” which is seeking to implement cost effective solutions to repair the Minneapolis roads. The method is coined “Concrete Pavement Preservation”, which is effectively a series of engineered techniques developed over the past 50 years to rehabilitate and renew concrete pavement. The processes are essentially designed for well-worn pavement in need of renewal, and is also a sustainable approach because it reuses existing materials rather than requiring large quantities of natural resources. In addition, CPP also improves the pavement’s surface friction, which essentially enhances safety when utilizing diamond grinding and/or grooving.
CPP effectively provides an alternative to costly reconstruction projects that require a complete overhaul of the paved road. The process provides a cost effective way to address the deteriorating pavement, and thus postpones reconstruction projects for decades. In Minneapolis, the techniques have been shown to extend the lifespan of concrete streets to 65-70 years, which translates into very low annual maintenance costs.
For more information please visit 'Progressive concrete pavement preservation strategy'