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Evaluation of the URETEK Method(Tradename) of Pavement Lifting.
| 题名： | Evaluation of the URETEK Method(Tradename) of Pavement Lifting. |
| 作者： | al-eis, k. a. labarca, i. k. |
| 关键词： | settlement, concrete bridges, wisconsin, approaches, polyurethane, concrete slabs |
| 摘要： | Several methods exist for the correction of differential settlement of concrete pavement, such as slab jacking, HMA overlay, and slab replacement. The Wisconsin Department of Transportation (WisDOT) elected to investigate The URETEK Method(Tradename) of pavement lifting to adjust the elevation of concrete pavement bridge approach slabs. A five-year project was initiated in coordination with WisDOTs Southwest Region to monitor the functionality of The URETEK Method(Tradename) and the stability of the slabs after pavement lifting at two test sites. Field surveys were conducted for five and one-half years after construction to monitor slab settlement and crack growth. The URETEK Method(Tradename) construction process took longer than anticipated and used two to five times more material than initially estimated by the contractor. Cost of the process was based on the quantity of material used, and therefore The URETEK Method(Tradename) was less cost effective than initially predicted. Pavement ride quality was improved at both test sites. Hairline cracks developed in the approach slabs after six months, and slight slab settlement was noted during informal ride quality surveys. However, ride quality remained at a comfortable level. Continued monitoring is warranted to determine if the hairline cracks result in a decrease in pavement service life. / NOTE: Final rept. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA. |
| 总页数： | u0718；30p |
| 报告类型： | 科技报告 |
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