详情

Mitigation Strategies for Cracking in Concrete Bridge Decks

项目名称：	Mitigation Strategies for Cracking in Concrete Bridge Decks
摘要：	One of the most important and common problems in state concrete infrastructures (specially in bridge decks) is cracking. Previous work with the University of Maine TIDC (Transportation Infrastructure Durability Center) and Maine DOT titled: Concrete Systems for a 100-Year Design Life, it has been found that following strategies can be used for reducing cracks in concrete decks: (1) Using Shrinkage Reducing Admixtures (2) Using Shrinkage Compensating (expansive) Admixtures (3) Limiting drying shrinkage. The 28-day drying shrinkage (ASTM C157/C157M 2017) should be kept below 300-350 με The study team tried to restrict drying shrinkage using shrinkage reducing and shrinkage compensating (expansive) admixtures. But other strategies need to be studied as well. In this project, the team will focus on the effects of better aggregate grading, fibers, and differential temperature on cracking, durability, mechanical, and transport properties of Class A concrete.
状态：	Programmed
资金：	40000
资助组织：	Maine Department of Transportation
项目负责人：	Peabody, Dale
执行机构：	Transportation Infrastructure Durability Center
主要研究人员：	Landis, Eric N
开始时间：	20220301
预计完成日期：	20240301
主题领域：	Bridges and other structures；Highways；Maintenance and Preservation；Materials