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EVALUATION OF NOTCHED-WEDGE LONGITUDINAL JOINT CONSTRUCTION.
| 题名： | EVALUATION OF NOTCHED-WEDGE LONGITUDINAL JOINT CONSTRUCTION. |
| 作者： | Buchanan-MS |
| 关键词： | Alabama-; Asphalt-pavements; Colorado-; Construction-; Cores-Specimens; Hot-mix-asphalt; Hot-mix-paving-mixtures; In-place-density; Indiana-; Longitudinal-joints; Maryland-; Notched-wedge-joint; Service-life; Wisconsin- |
| 摘要： | The proper construction of longitudinal joints is critical to the overall performance of a hot-mix asphalt (HMA) pavement. Many times the in-place density at and across the longitudinal joint is substantially lower than the density of the remainder of the HMA surface. This low in-place density increases the potential for cracking and raveling to develop along the joint. Research has shown that the use of the notched-wedge joint has the potential to increase the density at the longitudinal joint, which should result in a longer-lasting pavement. The notched-wedge joint construction technique was compared with conventional longitudinal joint construction techniques on projects in five states (Colorado, Indiana, Alabama, Wisconsin, and Maryland). The evaluation consisted of comparing the in-place densities obtained through pavement cores at five locations across the longitudinal joint of the pavement: at the centerline and at 150 mm (6 in.) and 450 mm (18 in.) on either side of the centerline. The results of the study indicate that the notched-wedge joint can be successfully used to increase the in-place density at the longitudinal joint. Some decrease in the in-place density was observed at the 150-mm (6-in.) location in the second lane (hot side) when the notched-wedge joint was used. |
| 总页数： | Transportation Research Record. 2000. (1712) pp50-57 (5 Phot., 2 Fig., 1 Tab, 4 Ref.) |
| 报告类型： | 科技报告 |
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