Optimization of Patching for Spray Injection Equipment
| 项目名称： | Optimization of Patching for Spray Injection Equipment |
| 摘要： | Pothole repair, often referred to as patching, is a costly and time consuming practice for localities, departments of transportation and highway agencies. These repairs are performed throughout the year, particularly during the winter months when the temperature drops below freezing with intermittent periods of thawing. Since hot mix asphalt plants are shut down during the winter, cold mix asphalt, which contains an emulsified or cutback asphalt, mixed with fine aggregates, is commonly used for these patches. Patching using the spray injection method can be used to overcome the reduced adhesion between the patching material and the existing pavement. This method utilizes heated emulsion and virgin aggregate that are sprayed into the pothole. The mix of virgin aggregate and heated emulsion can be varied depending on the size and location of the pothole. However, the selection of the aggregate and emulsion combination as well as the optimum spray rate of the emulsion are critical to ensure the longevity of the patches. This research will provide a comprehensive examination to determine the cost-effectiveness, benefits and limitations of the spray injection, identify proper procedures for use, identify different aggregate and emulsion materials for use, and provide specifications for use and storage. If proven successful, the spray injection method could result in a longer lasting pothole patch which improves the safety of the traveling public, and reduces costs associated with duplicate repairs of a pothole. |
| 状态： | Completed |
| 资金： | 191776 |
| 资助组织： | University of Akron |
| 项目负责人： | Warner , Jill |
| 开始时间： | 20130930 |
| 预计完成日期： | 20160330 |
| 实际结束时间： | 20160330 |
| 主题领域： | Highways；Maintenance and Preservation；Materials；Pavements |
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