Hot in-Place Recycling (HIR) to Repair Your Roads

Using Environmentally Sustainable Hot in Place Repaving on Baseline Road, MCDOT was able to save money, Improve Ride and safety by adding a safety edge and reducing carbon emmissions in a single pass, including use of tire rubber.

Hot in-place recycling helps the combined City and County of Denver meet its sustainability goals while lowering energy requirements and extending pavement life. The City of Denver is increasing its use of hot in-place recycling in order to meet their own sustainability criteria, in terms of the amount of material recycled, and cumulative emissions as opposed to other conventional maintenance methods.  

Butler County, Iowa had previously used cold in-place recycling (CIR) followed by 3 inches of Hot Mix Asphalt (HMA) to maintain their county road system. Hot in-place recycling (HIR) was chosen to repair current distress rather than CIR as there were concerns about excessive pavement thickness and the distress was limited to the HMA layer.