Composite Fiber Wrapping for Protection, Strengthening, and Repair of Bridge Elements in the Splash Zone

9504193 Spainhour该项目将研究纤维包裹在加强和保护暴露在盐水中的桥梁柱和桩。 将评估纤维包裹物在降低氯化物渗透性方面的有效性，以及它们保护柱和桩持续暴露于盐水中免受腐蚀破坏影响的能力。 暴露于潮汐海洋环境的强度，刚度和包装本身的耐久性的影响也将得到解决。 这项研究涉及三年的加速暴露模拟潮汐条件下使用盐水浸泡罐。 为了测试各种暴露条件，某些柱子将被预破裂;其他柱子将在暴露于海水一段时间后用纤维包裹物处理。 研究将确定： 1)纤维缠绕是否延长了新放置的色谱柱的生命周期，2）与其他处理和修复技术相比，纤维缠绕是否具有成本效益，以及3）在色谱柱生命周期的哪些点上，应用纤维缠绕作为防腐或修复装置具有成本效益。 ***

9504193 Spainhour This project will investigate fiber wraps in strengthening and protecting bridge columns and piles exposed to salt water. The effectiveness of fiber wraps in reducing chloride permeability will be evaluated, as well as, their ability to protect columns and piles continually subject to saltwater exposure from the damaging effects of corrosion. The effects of exposure to a tidal marine environment on the strength, stiffness, and durability of the wrap itself will also be addressed. The research involves three years of accelerated exposure simulating a tidal condition using a saltwater immersion tank. To test a variety of exposure conditions, certain columns will be precracked; others will be treated with the fiber wraps after a period of exposure to the seawater. The research will determine: 1) Whether fiber wraps extend the life cycle of a newly placed column, 2) Whether fiber wraps are cost effective in comparison to other treatment and repair techniques, and 3) At which points in the column life cycle is it cost-effective to apply fiber wraps as either a corrosion prevention or repair device. ***