Mitigating Pavement Reflective Cracking Using A Ductile Concrete Interlayer
| 项目名称： | Mitigating Pavement Reflective Cracking Using A Ductile Concrete Interlayer |
| 摘要： | Overlays are constructed over existing pavement structures as a repair measure. When an overlay is placed on an existing pavement, under thermal, shrinkage or traffic induced loadings, cracking of the overlay often takes place at locations where there are joints or cracks in the underlying pavement due to stress concentration. This phenomenon is known as reflective cracking. Reflective cracking in the overlay allows water to penetrate the pavement structure and contributes to many forms of pavement deterioration, including increased roughness, spalling and decreased fatigue life. Therefore, to achieve an effective and durable pavement repair using overlay system, reflective cracking needs to be suppressed. A ductile high-performance fiber reinforced concrete (HPFRC) interlayer is proposed in this research to mitigate the reflective cracking problem in pavement overlays. It is hypothesized that by adding a thin layer of highly ductile HPFRC material between the existing pavement and overlay, reflective cracking can be arrested by the ductile interlayer. HPFRC mixtures will be selected for the proposed interlayer application and their mechanical properties will be characterized. HPFRC interlayer system will be designed and tested under static and fatigue loadings to evaluate their performance and effectiveness in suppressing reflective cracking. The outcome of this research will include design recommendations and guidelines for HPFRC interlayer systems. |
| 状态： | Completed |
| 资金： | 89748 |
| 资助组织： | Office of the Assistant Secretary for Research and Technology |
| 管理组织： | Transportation Consortium of South-Central States |
| 项目负责人： | Hassan, Marwa M |
| 执行机构： | University of Louisiana at Lafayette |
| 主要研究人员： | Khattak, Mohammad |
| 开始时间： | 20180315 |
| 预计完成日期： | 20190915 |
| 实际结束时间： | 20190915 |
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