Condition Assessment and Determination of Methods for Evaluating Corrosion Damage in Piles Encapsulated in Protective Jackets on the Hampton Roads Bridge-Tunnel. Final Report

摘要

The primary purpose of this study was to assess the condition of piles that had been encapsulated in fiberglass and mortar jackets on four bridges that are part of the Hampton Roads Bridge-Tunnel (HRBT). Since these four bridges contain a total of approximately 1,800 piles, it was not feasible to conduct detailed testing and evaluation of each pile. Therefore, a necessary objective of the study was to consider visual, non-destructive, and destructive techniques and recommend those that were most effective and efficient in assessing pile condition under the fiberglass jacket systems. A secondary purpose of this study, at the request of the Virginia Department of Transportation's State Structure and Bridge Engineer, was to assess the effectiveness of the fiberglass jacket and mortar system in resisting corrosion and to make specific recommendations about application of these or similar systems on Virginia bridges in the future. To accomplish the purposes of this study, 52 HRBT piles were systematically selected for study. These piles represented a variety of conditions, ages, types, and locations. Destructive and non-destructive methods were used to evaluate the piles.