Rehabilitation of continuously reinforced concrete pavement with bonded overlay

Yoon Ho Cho, Dong Ho Kim, Seong Cheol Choi, Moon C. Won

Research output: Contribution to conferencePaper

Abstract

In Texas, many miles of old Portland cement concrete (PCC) pavement need rehabilitation due to their deficient structural capacity and resulting pavement distresses. Bonded concrete overlay (BCO) presents one of the rehabilitation strategies to strengthen PCCP systems. In 1986, the Texas Department of Transportation (TxDOT) constructed a 4-inch BCO on existing continuously reinforced concrete pavement (CRCP) in Houston. A factorial design was developed to evaluate the effects of different materials/design features and the condition of existing pavement. Test sections were placed in accordance with the factorial experiment. Materials included were siliceous river gravel and crushed limestone as coarse aggregates. The use of welded wire fabric and steel fibers was the factors included as design features. Field evaluations were conducted to identify factors responsible for the difference in the performance. Overall, 4-inch BCO provided good performance for the last 20 years. From the surveyed results, welded wire fabric showed better performance than steel fibers. Crushed limestone also provided better performance than siliceous river gravel. The combinations of steel fiber and siliceous river gravel did not perform as well. The conditions of pavements prior to overlay do not appear to have substantial effects on BCO performance.

Original languageEnglish
Pages277-282
Number of pages6
StatePublished - 2007
Event5th International Conference on Maintenance and Rehabilitation of Pavements and Technological Control, MAIREPAV 2007 - Park City, United States
Duration: Aug 8 2007Aug 10 2007

Conference

Conference5th International Conference on Maintenance and Rehabilitation of Pavements and Technological Control, MAIREPAV 2007
CountryUnited States
CityPark City
Period08/8/0708/10/07

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  • Cite this

    Cho, Y. H., Kim, D. H., Choi, S. C., & Won, M. C. (2007). Rehabilitation of continuously reinforced concrete pavement with bonded overlay. 277-282. Paper presented at 5th International Conference on Maintenance and Rehabilitation of Pavements and Technological Control, MAIREPAV 2007, Park City, United States.