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Developing Green, Highly Flowable, Rapid Set, High-Performance Concrete for Pavement Patch Repair-Tech Transfer Summary
| 题名： | Developing Green, Highly Flowable, Rapid Set, High-Performance Concrete for Pavement Patch Repair-Tech Transfer Summary |
| 作者： | Wang, K.; Lomboy, G. R. |
| 关键词： | High Performance Concrete (HPC)##Concrete pavement repair##Pavement patching machines##Mortar mixtures##Limestone fines##Rapid repair##Durability studies##Compressive strength##Flowable concrete##Recommendations## |
| 摘要： | The United States has an aging transportation infrastructure that is requiring extensive maintenance. According to a survey by The Road Information Program, 32 percent of major roads in the US are in either poor or mediocre condition (TRIP 2012). Rapid repair of the deteriorated roads is essential to avoiding the inconvenience of commuters and disruption of daily business. The repaired pavements must be strong and durable to meet service requirements and extend their service lives. For these demands, use of high-performance concrete (HPC) as a repair material is a very attractive option. HPC has been increasingly used for transportation structures, especially bridge decks, because of its high early strength (approximately 4,000 psi at 24 hours), high workability, and high durability. Recently, research has revealed that ultra-high-strength concrete (UHSC) or ultra-highperformance concrete (UHPC) can be produced using quartz and quartzite powders. Such concrete has very good flowability and excellent strengths (22,000 psi at 28 days). |
| 总页数： | 4 |
| 报告类型： | 科技报告 |
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