Review and Specification for Shrinkage Cracks of Bridge Decks, Phase II
| 项目名称： | Review and Specification for Shrinkage Cracks of Bridge Decks, Phase II |
| 摘要： | Concrete mixtures designed or constructed incorrectly as bridge decks can lead to shrinkage cracking. There have been lots of cracking found on bridge decks in Utah. The new shrinkage cracking apparatus built at Utah Department of Transportation (UDOT) can be used to verify in advance if the mixture design can lead to a potential shrinkage cracking problem. The Phase I of this project resulted in building the apparatus to test restrained shrinkage of mixture designs. A Phase II is needed now to understand how specific mixture changes can affect restrained shrinkage crack potential. The objectives are to determine mixture proportions and admixture effects on the age of cracking based on the UDOT modified restrained ring shrinkage test. This will be done by: (1) If needed, the test apparatus from Phase I may be further refined or modified (such as applying humidity controls); (2) Recreate and test restrained shrinkage of bridge deck mix designs identified from Phase I; and (3) Test changes to mixture proportions (potentially including adding water in the field) and different material effects (potentially including lightweight aggregates, or dosage of water-reducers) on restrained shrinkage. The expected results will be: (1) Determine if any existing approved Utah bridge deck mixtures can cause restrained shrinkage issues; and (2) Determine if changes to mixtures can cause shrinkage issues. |
| 状态： | Programmed |
| 资金： | 60000 |
| 资助组织： | Utah Department of Transportation |
| 管理组织： | Utah Department of Transportation |
| 项目负责人： | Hales, Thomas |
| 执行机构： | University of Utah, Salt Lake City |
| 主要研究人员： | Bordelon, Amanda |
| 开始时间： | 20161001 |
| 预计完成日期： | 20181001 |
| 实际结束时间： | 0 |
相关文献
- Investigation into Shrinkage of High Performance Concrete Used for Iowa Bridge Decks and Overlays - Phase II Shrinkage Control and Field Investigation TR-690 (Phase II for TR-663)
- Mitigation Strategies for Cracking in Concrete Bridge Decks
- Evaluation of Crack Free Bridge Decks
- Controlling Temperature and Shrinkage Cracks in Bridge Decks and Slabs
- Synthesis of Information Related to Highway Problems. Topic 47-01. Control of Cracking in Concrete Bridges
- Guide to Remediate Bridge Deck Cracking
检索历史
应用推荐
