Bridge Repairs

Paper Summary:

The paper notes that America's roads, highways and freeways invariably require bridges to cross over canyons, rivers and other uneven terrain, and, as strong as the bridges may seem to be at the time of their construction, the best of the best of engineers have not yet been able to build corrosion-proof bridges. The paper discusses the numerous studies that have been conducted as to how to best repair the damage to concrete slab / steel girder bridges, and notes that their results, taken in their entirety, provide solid background for further research into these issues.

Outline:
Abstract
Introduction
Descriptions / Recommendations
Conclusion

From the Paper:

"According to a brief article in the journal Advanced Materials & Processes, a potentially effective and reliable way of protecting against steel rebar corrosion that seems inevitable in concrete bridges is by using zinc-hydrogel anode 4727. This product may provide "long-term electrochemical protection" against the deterioration of the steel rebar in the concrete, the article states. When this "pressure-sensitive" zinc-hydrogel solution is applied an "iconic current" is conducted. Wires run through the rebar grid once the concrete is covered thoroughly with the adhesive gel."

Sample of Sources Used:

• Advanced Materials & Processes. Zinc hydrogel anode protects against rebar corrosion. 158(6) (2000): 15.
• Advanced Materials & Processes. (2007) Xion Corp. Develop Coating Technology for Bridge Repairs. 165(11), 101.
• Anoop, M.B., & Rao, Balaji K. (2007) Application of Fuzzy sets for Remaining Life Assessment Of Corrosion Affected Reinforced Concrete Bridge Girders. Journal of Performance of Constructed Facilities, 21(2), 166-171.
• Bernhard, J.T., Hietpas, K., George, E., Kuchma, D., & Reis, H. (2003). An Interdisciplinary Effort to Develop a Wireless Embedded Sensor System to Monitor and Assess Corrosion in the Tendons of Prestressed Concrete Girders. 2003 IEEE Topical Conference on Wireless Communication Technology 15(17) 241-243.
• Enright, Michael P. (1998). Service-Life Prediction of Deteriorating Concrete Bridges. Journal of Structural Engineering 124(3) 309-317

More papers on Bridge Repairs:

• Research Paper # 63191 : "Bridge Management"
• Case Study # 140978 : "The Brooklyn Bridge: A Case Study In Design"
• Essay # 73775 : "Bierce's Owl Creek Bridge"

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