详情

Structural Fiber Reinforcement to Reduce Deck Reinforcement and Improve Long-Term Performance

项目名称：	Structural Fiber Reinforcement to Reduce Deck Reinforcement and Improve Long-Term Performance
摘要：	Repair of reinforced concrete bridge decks represents a large portion of bridge manager's budgets. A survey of 52 transportation agencies identified more than 100,000 bridges across the United States that have exhibited early age bridge deck cracking. Reducing the amount of cracking on bridge decks would likely lead to better infrastructure resilience and lower long term costs. While various reinforcing materials are available to reduce or eliminate corrosion, they are often considered near cost prohibitive (e.g., stainless steel) or difficult to procure (carbon fiber rebar) or come with significant design challenges (e.g., glass fiber rebar). Epoxy coated mild reinforcement is the steel corrosion protection of choice among many Departments of Transportation, however its performance is highly dependent on the initial condition of the coating which is historically easy to damage during the manufacture, transport and construction. Other coating options like galvanized reinforcement or stainless clad reinforcement are often seen as not worth the cost as evidenced by their relative lack of use. By combining SFRC with various types of reinforcement (black steel, stainless steel, GFRP rebar), the total amount of steel can be reduced, limiting the total amount of damaged caused to a bridge deck. Potentially, the entire top mat of reinforcement could be eliminated or even all discrete reinforcement and the SFRC will provide additional crack control.
状态：	Completed
资金：	133000
资助组织：	Office of the Assistant Secretary for Research and Technology
管理组织：	Mountain-Plains Consortium
项目负责人：	Kline, Robin
执行机构：	Utah State University
主要研究人员：	Maguire, Marc
开始时间：	20181019
预计完成日期：	20220731
实际结束时间：	20200619