详情

Impacts of Vehicle Fires on Polymer Concrete Bridge Deck Overlays

项目名称：	Impacts of Vehicle Fires on Polymer Concrete Bridge Deck Overlays
摘要：	Polymer concrete (PC) has become a popular choice for deck overlays on new and existing bridges. However, PC's high sensitivity to elevated temperatures, and the significant difference between its thermal expansion coefficient and that of the concrete substrate, have prompted concerns that vehicle fires may degrade or even completely destroy PC bridge deck overlays. With the wider aim of enhancing such overlays' vehicle-fire resistance, the proposed research will investigate such fires' specific impacts on them, both through a real vehicle-fire test on a large reinforced concrete (RC) panel protected by a PC overlay, and through overlay-performance tests before and after the vehicle-fire test. Then, based on the test data, effective preventive design/construction methods and post-fire repair strategies for PC bridge deck overlays will be proposed, and tested on medium-sized RC panels under controlled heating-cooling conditions. It is expected that applying the resulting recommendations in real projects will enhance the vehicle-fire resistance of PC bridge deck overlays, and thus reduce transportation interruptions due to vehicle fires.
状态：	Active
资金：	160000
资助组织：	Office of the Assistant Secretary for Research and Technology
项目负责人：	Tolliver, Denver
执行机构：	Civil & Environmental Engineering Department
开始时间：	20210824
预计完成日期：	20220731
主题领域：	Bridges and other structures；Highways；Materials；Pavements；Safety and Human Factors