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HIGH PERFORMANCE MATERIALS FOR US HIGHWAY BRIDGES

机译:美国高速公路桥梁的高性能材料

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摘要

More than 30 percent of the 587,815 bridges in the United States are classified as deficient. The Federal Highway Administration is committed to improving mobility on the nation's highways by a significant reduction in the number of deficient bridges and a reduction in the time necessary to complete bridge projects. The United States is aggressively developing and utilizing high performance bridge materials including high performance versions of steel and concrete. The US is also experimenting with fiber-reinforced polymer composites that are advantageous where high strength, light weight and resistance to attack from road salts and chemicals are critical or where rapid installation times are paramount. The Innovative Bridge Research & Construction (IBRC) Program champions the use of innovative materials and technologies to repair, rehabilitate or replace bridges. More than 150 projects utilizing innovative materials have been funded.
机译:在美国587,815座桥梁中,超过30%被归类为缺陷。联邦公路管理局(Federal Highway Administration)致力于通过大幅减少缺陷桥梁的数量和减少完成桥梁项目所需的时间来改善国家高速公路的机动性。美国正在积极开发和利用高性能桥梁材料,包括高性能版本的钢和混凝土。美国也在试验纤维增强的聚合物复合材料,该材料在高强度,轻质和抵抗道路盐和化学物质侵蚀的抵抗力至关重要或快速安装时间至关重要的情况下具有优势。创新桥梁研究与建设(IBRC)计划倡导使用创新材料和技术来修复,翻新或更换桥梁。已利用创新材料资助了150多个项目。

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