原文传递
Validity of Multiple Stress Creep Recovery (MSCR) Test for DOTD Asphalt Binder Specification
| 题名： | Validity of Multiple Stress Creep Recovery (MSCR) Test for DOTD Asphalt Binder Specification |
| 作者： | Kabir, S.; King, W. |
| 关键词： | Asphalt binder##Skid resistance##Safety##Pavement condition survey##Glass-grid## |
| 摘要： | Numerous studies have shown that G*/Sin(delta), the high temperature specification parameter for current Performance Graded (PG) asphalt binder is not adequate to reflect the rutting characteristics of polymer-modified binders. Consequently, many state Department of Transportation (DOT)s have added supplemental specifications, also known as “PG-Plus” tests, to identify the presence of polymer-modified binders. Louisiana Department of Transportation and Development (DOTD) is one among those state agencies that require force ductility, elastic recovery, and separation of polymer tests as the “PG Plus” requirements. However, most of these PG-Plus tests are unable to evaluate the performance of the polymer-enhanced binders and only determine the presence of a modifier. In this study, 44 Styrene-Butadiene-Styrene (SBS) polymer-modified asphalt binders currently graded as PG 70-22m and PG 76-22m and commonly used in the state of Louisiana were investigated. Those binders were collected from seven local asphalt binder suppliers. A suite of asphalt binder characterization tests namely: MSCR, G*/Sin(delta), elastic recovery, and Force Ductility were conducted to assess the suitability of MSCR test to be included in Louisiana DOT’s asphalt binder specifications in addition to identifying the potential of replacing elastic recovery and force ductility tests with MSCR recovery. Based on the findings of this study, DOTD is recommended to make the transition to AASHTO MP 19, the new J(sub nr)-based asphalt binder specifications. Recommendations are also provided to replace the currently used elastic recovery and force ductility tests with the MSCR recovery results. |
| 总页数： | 92 |
| 报告类型： | 科技报告 |
相关文献
- Analysis of the Multiple Stress Creep Recovery Asphalt Binder Test and Specifications for Use in Indiana
- Improving the Performance-Graded Asphalt Binder Specification: Final Report.
- Performance of Warranted Asphalt Pavements Smoothness and Performance of Indiana Warranted Asphalt Pavements
- Final Report: Grade Determination of Crumb Rubber-Modified Performance Graded Asphalt Binder.
- Characterization of Alaskan Hot-Mix Asphalt Containing Reclaimed Asphalt Pavement Material
- Asphalt Materials and Mixtures 2016, Volume 3: Transportation Research Record: Journal of the Transportation Research Board, No. 2576
检索历史
应用推荐
