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Corrosion Performance of Concrete Cylinder Piles. Final rept.
| 题名： | Corrosion Performance of Concrete Cylinder Piles. Final rept. |
| 作者： | LAU, K.; SAGUES, A. A.; YAO, L. |
| 关键词： | *Concrete-piles; *Bridge-foundations; *Corrosion-.;Concrete-bridges; Guidelines-; Performance-; High-corrosion-resistance; Reinforced-concrete; Salt-water; Florida-; Damage-. |
| 摘要： | Cylinder bridge piles that are produced by a centrifugally cast, vibrated, roller compacted process (also known as Raymond piles) have shown promising resistance to reinforcement corrosion in an earlier Florida Department of Transportation (FDOT) field investigation. That work, performed on the twin Escambia Bay Bridges, showed minimal corrosion damage after 30 years of service even though clear concrete cover over reinforcement was only 1.1 in (2.75 cm). Cylinder piles are encountering renewed application in FDOT projects. However, present FDOT guidelines for reinforcement corrosion protection in aggressive marine service specify at least 3 in (7.6 cm) cover, which tends to constrain the manufacturing process and mechanical performance of cylinder piles. This investigation examined whether FDOT bridges built with cylinder piles showed similarly high corrosion resistance and sought to establish any factors responsible for the performance, with a view to considering redefining cover guidelines for construction. |
| 报告类型： | 科技报告 |
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