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MATCHING LOAD TRANSFER TO TRAFFIC NEEDS.
| 题名： | MATCHING LOAD TRANSFER TO TRAFFIC NEEDS. |
| 作者： | Cable-JK; Wosoba-LI |
| 关键词： | Concrete-pavements; Deflection-tests; Dowels-Fasteners; Iowa-; Load-transfer; Pavement-design; Rural-highways; Test-sections; Transverse-joints; Urban-highways |
| 摘要： | Current pavement design in Iowa calls for the inclusion of load transfer dowels in transverse joints in both state and local pavements. The dowels have been included to protect the pavement against faulting of the joints and other forms of distress resulting from erosion of the soils from beneath the joints. Faulting has been found to be present mostly at the outer edges of the driving lane. Iowa Highway Research Board Project TR-420 is directed at the evaluation of placing alternative numbers of dowels in the transverse joints of the pavement. A rural and an urban pavement were selected for the test sites on county highways near Creston, Iowa. The sites include subsections containing zero dowels in the transfer joint, three or four dowels in the outer wheel path only, and a full basket of dowels across the joint. This paper will discuss the results of deflection testing in both wheel paths in both pavement directions on the rural and urban sections. Fault measurements, joint opening widths, and visual distress surveys have been conducted twice per year on each of the projects. The construction projects are now one year old and the response to load in each case can now be evaluated. |
| 总页数： | Conference Title: Mid-Continent Transportation Symposium 2000. Location: Ames, Iowa. Sponsored by: Iowa State University |
| 报告类型： | 科技报告 |
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