National Conference on Preservation, Repair, and Rehabilitation of Concrete Pavements
St. Louis, Missouri, USA
April 22–24, 2009
Federal Highway Administration
Foreword to the Proceedings
Well-designed and well-constructed concrete pavements can be expected to provide low-maintenance service life, well exceeding the as-designed service life. The majority of pavements in the U.S. Interstate and primary systems were designed on the basis of a 20- to 25-year initial service life, and many miles of these pavements are in service after more than 30 to 35 years. However, concrete pavements do deteriorate with time and traffic loadings and because of concrete material failures. But, sound corrective measures performed in a timely manner can greatly extend the service life of existing concrete pavements. These corrective measures include preservation treatments, repair/restoration activities, and rehabilitation. The goal of the corrective measures is to extend the useful life of concrete pavements (structural capacity and functional characteristics) with the least life cycle costs. Timely preservation activities can delay the need for repairs, and timely repairs can delay the need for rehabilitation. Delays in timely preservation, repair, and rehabilitation (PRR) or improper PRR activities can lead to pavements that are in such poor condition that the only option remaining is reconstruction, which is more costly.
Over the last two decades, there has been much progress in developing effective PRR techniques.
However, many gaps remain, and many practices are not implemented consistently from one region to another. An important technical limitation is associated with our ability to rationally determine what treatments need to be performed at what stage in the pavement’s life and what are the consequences of delaying needed treatments. In today’s environment, where the highway agency budgets cannot fully meet the needs for managing pavement assets yet there is no lessening in traffic growth and public expectations, it is important that the limited funds available to maintain our highway systems are expended in an optimal manner.
This 2 1/2-day National Conference on Preservation, Repair, and Rehabilitation of Concrete Pavements was organized as a part of technology transfer activities conducted under the U.S. Concrete Pavement Technology Program, which operates within the Federal Highway Administration. The conference objective was to provide a national forum to address the technology needs related to the PRR of concrete pavements.
The editor would like to thank the authors for supporting the objective of this conference by developing comprehensive papers related to the conference themes. The papers included in the proceedings were peer-reviewed for technical content, and the editor would also like to thank the conference steering committee members and the many reviewers who participated in the paper review process.
Shiraz Tayabji, Ph.D., P.E.
Chair, Conference Steering Committee