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REVIEW OF COLD IN-PLACE ASPHALT RECYCLING IN IOWA.
| 题名： | REVIEW OF COLD IN-PLACE ASPHALT RECYCLING IN IOWA. |
| 作者： | Jahren-CT; Cawley-B; Ellsworth-B; Bergeson-KL; Brink-M (Editor) |
| 关键词： | ASPHALT-CONCRETE-PAVEMENTS; ASPHALT-PAVEMENTS; COLD-IN-PLACE; COLD-MIX-PAVING-MIXTURES; CRACKING-; IOWA-; PAVEMENT-PERFORMANCE; RECYCLED-MATERIALS; REHABILITATION-MAINTENANCE; RUTTING-; SUBGRADE-PAVEMENTS |
| 摘要： | A research project was undertaken to evaluate the performance of cold in-place recycled (CIR) asphalt projects in the state of Iowa. A sample of eighteen roads was selected. Then performance was evaluated in two ways: pavement condition indices (PCI) were calculated and overall ratings were given on ride and appearance. A regression analysis was extrapolated to predict the future service life of CIR roads. The results were that CIR roads within the state of Iowa with less than 2000 annual average daily traffic (AADT) have an average predicted service life of fifteen to twenty-six years. Overall, CIR roads in Iowa are performing well. It appears that the development of transverse cracking has been retarded and little rutting has occurred. Contracting agencies must pay special attention to the subgrade conditions during project selection. Because of its performance, CIR is a recommended method for rehabilitating aged low volume (<2000 ADT) asphalt concrete roads in Iowa. |
| 总页数： | Conference Title: Crossroads 2000. Location: Ames, Iowa. Sponsored by: Iowa State University and Iowa Department of Transportation. Held: 19980819-19980820. 1998. pp259-263 (3 Fig., 4 Tab., 4 Ref.) |
| 报告类型： | 科技报告 |
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