Development of In-Place Density Method for Cold In-Place Recycling
| 项目名称： | Development of In-Place Density Method for Cold In-Place Recycling |
| 摘要： | Typically, in-place compaction of asphalt bound layers is controlled through the measurement of the density of the compacted mat and the calculation of in-place air voids. In the case of hot-mix asphalt (HMA), a combination of cores and nuclear density gauge is used to determine the in-place density of the compacted mat following well-established American Association of State Highway and Transportation Officials (AASHTO) and Agency�s procedures. The implementation of the same procedures for cold in-place recycling (CIR) faces serious limitations due to: (1) the inability of cutting cores from the CIR mat until full curing of the CIR mix has occurred which requires 10-14 days; and (2) the ineffectiveness of the nuclear density gauge during the compaction process because of the high moisture content of the CIR mix. The above limitations have led to the construction of CIR projects without the effective control of in-place compaction. Hence, the overall objective of this research project is to develop a practical method to measure the in-place density of the CIR layer during the construction and compaction process. First, the possible methodologies that can be used for directly or indirectly measuring the in-place density of CIR layer will be identified. Second, the promising technologies will be evaluated in the laboratory. Finally, the laboratory-validated method will be implemented on field projects and guidelines will be developed for inclusion in construction specifications. |
| 状态： | Completed |
| 资金： | 101271 |
| 资助组织： | Office of the Assistant Secretary for Research and Technology |
| 管理组织： | University of Nevada, Reno |
| 执行机构： | University of Nevada, Reno |
| 主要研究人员： | Sebaaly, Peter E |
| 开始时间： | 20160301 |
| 预计完成日期： | 20180930 |
| 实际结束时间： | 20180131 |
相关文献
- Synthesis of Information Related to Highway Practices. Topic 51-08. Practice and Performance of Cold In-Place Recycling and Cold Central Plant Recycling
- Sustainability and Training Materials for In-Place Recycling
- LTPP Data Analysis: Significance of As-Constructed Asphalt Pavement Air Voids to Pavement Performance
- Evaluation of Curing Effects on Cold In-Place Recycling (CIR)
- Moisture Content and In-Place Density of Cold Recycle Treatments
- Construction Guide Specifications for Cold Central Plant Recycling and Cold In-Place Recycling
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