Improving Concrete Patching Practices on Iowa Roadways TR-731
| 项目名称： | Improving Concrete Patching Practices on Iowa Roadways TR-731 |
| 摘要： | Portland cement concrete (PCC) pavements are subject to distress from a variety of mechanisms including traffic loads, thermal movement, freezing and thawing, materials related distress, and construction issues. Standard practice for maintaining PCC pavements includes concrete patching using partial depth and full depth repairs. States spend large amounts of money and time every year performing partial and full depth repairs of PCC pavements. The performance of partial and full depth repairs is important for cost savings and safety of the roadways. The important aspects of concrete patching are rapid strength gain, material workability, durability (repair service life), cost, and constructability of the repair. These aspects may not always be in line with each other and need to be considered as a whole. For example, rapid strength gain of the patching materials may reduce road closure time and minimize disruption to the traffic; however, rapid strength gain may also cause problems with workability, constructability, and durability of the patch. |
| 状态： | Active |
| 资金： | 175000 |
| 资助组织： | Iowa Department of Transportation |
| 管理组织： | Wiss, Janney, Elstner Associates, Incorporated |
| 项目负责人： | Goetz, Vanessa |
| 主要研究人员： | Nelson, Todd G |
| 开始时间： | 20170801 |
| 预计完成日期： | 20211231 |
| 实际结束时间： | 0 |
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