Long-Term Field Performance of Cold In-Place Recycled Roads in Iowa
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VIEW THE REPLYPublication: Journal of Performance of Constructed Facilities
Volume 24, Issue 3
Abstract
Cold in-place recycling (CIR) is one of the most effective methods to rehabilitate asphalt pavements. In fact, most CIR roads have performed well at low cost in Iowa since the first CIR road was constructed in 1986. However, some CIR roads have reached failures earlier than their expected design lives because there is no design standard for designing CIR roads with a limited amount of past performance information. Some of the most prominent problems seemed to have come from selecting CIR in areas where there are poor subgrades. Therefore, it is critical to collect CIR performance data along with falling weight deflectometer (FWD) data in order to develop performance models. The main purpose of this paper is to document that effort. The performance models were developed on the basis of historical data collected from CIR roads in Iowa. First, an inventory of CIR roads was created which includes construction information, subgrade and base characteristics, and traffic levels. In consideration of pavement age, level of traffic, and subgrade condition, 26 test sections were selected from the inventory of CIR roads and pavement surface distress surveys were conducted on these roads using an automated image collection system. Distress data were then compiled to compute pavement condition index (PCI) for each test section. FWD data were collected from each test section to determine its relative soil support condition. Finally, to determine their long-term performance, the PCI values were plotted against the pavement age for each group of pavements categorized by their soil support conditions and traffic levels. Overall, it can be concluded that the CIR roads in Iowa, all under traffic level of annual average daily traffic of 2,000, have performed very well and predicted to last up to 25 years before reaching the poor condition when the pavements are to be rehabilitated. The CIR roads with a good subgrade support, however, are predicted to last up to 35 years.
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Acknowledgments
The writers would like to thank the financial support provided by the Iowa Highway Research Board (IHRB) and the members of the technical advisory committee for their guidance throughout the project. Disclaimer: the contents of this paper reflect the views of the writers, who are solely responsible for the facts and the accuracy of the data presented herein. This paper does not constitute a standard, specification, or regulation.
References
Bemanian, S., Polish, P., and Maurer, G. (2006). “State-of-the-practice on CIR and FDR projects by Nevada DOT.” Transportation Research Board (CD-ROM), National Research Council, Washington, D.C.
Chen, D., Jahren, C. T., Lee, H., Williams, R. C., Kim, S., and Kim, J. (2010). “Effects of recycled materials on long-term performance of cold in-place recycled asphalt roads.” J. Perform. Constr. Facil., 24(3), 275–280.
Jahren, C. T., Cawley, B., and Bergeson, K. L. (1999). “Performance of cold in-place asphalt cement concrete roads.” J. Perform. Constr. Facil., 13(3), 128–133.
Lane, B., and Kazmierowski, T. (2005). “Implementation of cold in-place recycling with expanded asphalt technology in Canada.” Transportation Research Board (CD-ROM), National Research Council, Washington, D.C.
Morian, D. A., Oswalt, J., and Deodhar, A. (2004). “Twenty years later—Experience with cold in-place recycling as a reflective crack control technique.” Transportation Research Record. TRB2004-001168, Transportation Research Board (CD-ROM), Washington, D.C.
Sebaaly, P. E., Bazi, G., Hitti, E., Weitzel, D., and Bemanian, S. (2004). “Performance of cold in-place recycling in Nevada.” Transportation Research Board (CD-ROM), National Research Council, Washington, D.C.
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© 2010 ASCE.
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Received: Jun 10, 2009
Accepted: Aug 10, 2009
Published online: Oct 5, 2009
Published in print: Jun 2010
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