Durable UHPC Columns with High-Strength Steel
| 项目名称： | Durable UHPC Columns with High-Strength Steel |
| 摘要： | Rapid deterioration of bridge substructures has been one of the major reasons for the current need of rebuilding the nation�s infrastructure. Older bridges are originally designed for a 50-year service life, but ongoing repairs/retrofits and newer construction aim at extending service life to 75 or 100 years. Moreover, bridge substructures in harsh aggressive environments are even suffering faster deterioration. Thus, protecting and building durable bridge substructures is of national interest. Using durable materials with very low porosity such as ultra-high performance concrete (UHPC) is one way to achieve such goal. In addition, the exceptional mechanical properties of UHPC will lead to compact substructure elements and provide a plausible solution for accelerated bridge construction (ABC) construction where lighter and easier-to-handle and transport bridge components can be pre-fabricated and shipped to the site. Currently, most of the UHPC applications are limited to bridge deck joints and ABC connections. Only few studies considered UHPC at the full structural elements, and no previous studies properly focused on design optimization using UHPC. Using high-strength steel (e.g. Grade 100) with UHPC can further reduce bridge elements size and promote durable and sustainable ABC, which is the goal of this project. |
| 状态： | Completed |
| 资金： | 110000 |
| 资助组织： | Accelerated Bridge Construction University Transportation Center (ABC-UTC) |
| 管理组织： | Office of the Assistant Secretary for Research and Technology |
| 项目负责人： | Azizinamini, Atorod |
| 执行机构： | Accelerated Bridge Construction University Transportation Center (ABC-UTC) |
| 主要研究人员： | Itani, Ahmad M |
| 开始时间： | 20170601 |
| 预计完成日期： | 20190531 |
| 实际结束时间： | 20190501 |
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