Information was collected from each of the six states in Region 5 of the Federal Highway Administration (FHWA) on the procedures used to rehabilitate jointed concrete pavements. As built plans and specifications were obtained from a number of projects in each of the six states which had been rehabilitated and the performance of the pavements were studied after a number of years in service. Interviews were conducted with personnel of the Departments of Transportation from each state to collect as much information as possible concerning the current practices and techniques used for pavement rehabilitation. Where sufficient data were available, statistical correlations were made of the performance trends as they relate to specific rehabilitation practices. Current practices were compared with earlier practices and efforts made to determine the reasons for the changes. Results show that the performance is closely related to the workmanship in the field and the ingenuity of the engineers involved. Recommendations are presented for each of the rehabilitation techniques studied. Many problems still exist with all of the techniques studied. Further detailed data on the exact procedures and practices used in the field during the rehabilitation and performance after rehabilitation are desperately needed. Better record keeping is sorely needed on both the "as built" conditions and on the performance, so the effectiveness of the various practices can be documented.

1917-19 (Bulletin of information no. 91, 95, 98), 1968- replaced by annual cumulated editions.