Polymer Concrete Overlay Evaluation
Start date: 05/01/13
End date: 06/30/16
Report: June 2016, Polymer Concrete Overlay Evaluation 17.22 mb (*pdf)
Related publications: Polymer Concrete Overlay Evaluation 2.31 mb *pdf June 2016
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Federal Highway Administration State Planning and Research Funding
Iowa Department of Transportation
About the research
The two bridges—a Johnson County, Iowa bridge over I-80 on 12th Avenue in Coralville, and the Keg Creek Bridge on Hwy 6 in western Iowa, 10 miles east of Council Bluffs—were overlaid during the summer/fall of 2013. The process by which each bridge was overlaid was similar in many ways, although a few slight differences existed.Over time, each overlay has generally performed quite well with only a few areas of exception. It is believed that these localized areas likely underperformed due to poor deck preparation, improper polymer mixing, snowplow impact, or a combination thereof.
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