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TACK COAT APPLICATION FOR OLD / OXIDIZED BITUMINOUS SURFACES
| 题名： | TACK COAT APPLICATION FOR OLD / OXIDIZED BITUMINOUS SURFACES |
| 正文语种： | eng |
| 作者： | Sameer Uddin;G.D. Ransinchung R.N. |
| 作者单位： | Military Engineer Services;Department of Civil Engineering IIT Roorkee Uttarakhand |
| 摘要： | Poor bonding between two layers of Hot Mix Asphalt (HMA) is the cause of many highway pavement problems, especially mat movement during compaction, which ultimately leads to micro-cracking on the surface. Typically, hot asphalt, emulsified asphalt, or cutback asphalts are used as tack coats. The objective of this study was to evaluate the optimum quantity and number of tack coat layers over the oxidized asphaltic surface. Results indicated that when tack coat is applied in two layers over old or oxidized surfaces, the emulsion has the highest interface bond or shear strength. No movement of the mat and associated micro-cracks in the layer has been observed. This paper talks about how innovative methods are used to work out the optimal amount of tack coat, which is to be used for the old or oxidized surfaces to achieve bonding between the layers, compaction of the layer, minimize mat movement, microcracking, and compaction difficulty. |
| 出版年： | 2023 |
| 期刊名称： | Indian Highways |
| 卷： | 51 |
| 期： | 8 |
| 页码： | 19-24 |
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