Sustainability of Continuously Reinforced Concrete Pavement (CRCP) Containing Recycled Aggregate and Epoxy-Coated Reinforcing

Abstract

A 32-mile (52 km) segment of concrete interstate highway from Madison to Portage, Wisconsin, was rebuilt in 1984 using recycled aggregate and epoxy-coated bars. In 2008-2009, 3½ miles (5.6 km) of the continuously reinforced concrete pavement (CRCP) was demolished due to the construction of a new interchange at State Road 60 and I-90/I-94. This report documents the condition of the CRCP pavement, the demolition, and the materials after 25 years of service. It is believed that this CRCP pavement was the first to use epoxy-coated reinforcement and possibly the first to use recycled concrete aggregate as well. This project demonstrates the reuse of both steel and concrete and the ability for a highly durable system to incorporate sustainable features.