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Polymer Concrete Overlay Evaluation. Tech Transfer Summary
| 题名： | Polymer Concrete Overlay Evaluation. Tech Transfer Summary |
| 作者： | Dahlberg, J.; Phares, B. |
| 关键词： | Bridge deck overlays##Deck overlay performance##Polymer concrete##Overlays(Pavement)##Polymer overlay placement##Iowa##Federal Highway Administraion (FHWA)##Keg Creek Bridge##Johnson County (Iowa)##Tech Transfer Summary## |
| 摘要： | The objectives of this work were to document the state-of-the-practice with respect to polymer concrete overlays, document the tech transfer summary for the past 13 years or so, the Kansas Department of Transportation (KDOT) has been using polymer-based overlays on primary highway bridge decks. Since the first trial application, more than 200 decks have been overlaid with primarily epoxy-based materials. Recently, however, KDOT has begun trials with overlays based on methracrylates and polyesters. In general, anecdotal evidence suggests that the KDOT experience has been good. However, implementation has not been without problems and a commonly encountered learning curve. Despite these problems, KDOT has started using polymer overlays on new structures in place of their more conventional silica-fume overlays. Problem Statement While most problems that have been encountered were not attributed to material problems, there has been no concerted effort to track or document polymer overlay performance with time or to relate performance to material usage and/or workmanship. The objectives of this work were to document the state-of-the-practice with respect to polymer concrete overlays, document the placement of two overlays in Iowa, monitor the field performance of the overlays over a two-year period, and relate their performance to material usage and/or workmanship. First polymer layer complete on the Johnson County bridge. |
| 总页数： | 3 |
| 报告类型： | 科技报告 |
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