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Laboratory Evaluation of Constructability Issues with Surface Treatment Binder.
| 题名： | Laboratory Evaluation of Constructability Issues with Surface Treatment Binder. |
| 关键词： | binder；evaluation；surface；ctab；labor；treat；bora；struc；sues；with |
| 摘要： | TxDOT depends greatly on sprayed seals for new road construction (surface treatments) and on preventive maintenance measures (seal coat). Procedures for pavement maintenance and preservation have shown to be successful and effective when done properly. TxDOT specification Item 316 defines surface treatments as one or more applications of a single layer of asphalt material covered with a single layer of aggregate.This treatment is typically called chip seal in other parts of the country. TxDOT also uses some other common treatments such as fog seal, prime coat, and tack coat. These treatments may be applied with a variety of materials, but in particular, experience has shown that emulsified asphalts, and to a lesser degree cutback asphalts, are very sensitive to the construction process and the conditions at the time of treatment application. The purpose of this research was to investigate the constructability issues of seal coat and surface treatment binders and develop guidelines for more effective binder use. At the beginning of the study, the research team was directed by the Project Monitoring Committee (PMC) to focus primarily on emulsified asphalt binders used in seal coats. |
| 报告类型： | 科技报告 |
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