This paper documents a 10-year case study of pavement rehabilitation performance conducted by the illinois department of transportation. The pavement section, an 8-in. Continuously reinforced concretepavement on interstate 57 south of chicago, illinois, was rehabilitated in 1978. Full-depth repair, epoxy crack sealing, undersealing, and underdrain installation were performed prior to placement of an asphalt concrete overlay. Combinations of these rehabilitation techniques were applied to six test sections on the project. The rehabilitation work was thoroughly documented, and the performance of the project over the past 10 years has been carefully monitored through visual surveys, nondestructive deflection testing, and photographs. The successes and failures of the rehabilitation techniques are described in this paper. A three-part analysis of the cost-effectiveness of rehabilitation was also conducted. Cost-effective rehabilitation is defined as appropriate and adequate repair performed at the appropriate time in the life of a pavement. The analysis investigates three components of this definition as it relates to this project: (1) what rehabilitation is appropriate, (2) how much preoverlay repair isadequate, and (3) the most appropriate time to place an overlay. The results indicate that, although the rehabilitation work performed on this project was appropriate and successful, it may not have beenthe most appropriate (i.E., Most cost-effective) rehabilitation that could have been performed. This paper appears in transportation research record no. 1215, Pavement management and rehabilitation.
Abstract