Title:
Field Investigations of Concrete Bridge Decks in Indiana: Part I: New
Construction & Initial Field Investigation of Existing Bridge Decks
Author(s):
Lisa M. Samples and Julio A. Ramirez
Publication:
Concrete International
Volume:
22
Issue:
2
Appears on pages(s):
53-56
Keywords:
bridge decks; chloride analysis; concrete cores; concrete cover; corrosion; corrosion protection; delamination; distress; defect testing; durability; epoxy-coated reinforcing steel (ECR); existing bridges; field investigation; holidays
DOI:
Date:
2/1/2000
Abstract:
Part 1 of this series reported the results of an extensive field investigation of existing and new concrete bridge decks in Indiana. Initial visual inspections of 114 concrete bridge decks, constructed between 1972 and 1980 were performed. Decks containing epoxy-coated reinforcement (ECR) and uncoated reinforcement were included in the initial field investigation, as well as various other corrosion protection systems. Signs of distress included spalling, areas of delamination, and rust stains. Based on the results reported in Part I of this series, six bridge decks were chosen for a second detailed survey. Part II reports the results of an extensive field investigation of existing and new concrete bridge decks in Indiana. The results from the initial visual inspection of existing concrete bridge decks showed that 46% had signs of distress from corrosion of the reinforcement. Cover measurements were taken on 106 of the surveyed bridge decks. Corrosion of epoxy coated reinforcing steel (ECR) is discussed. Cores were taken for chloride analysis and half-cell potentials on bridges with uncoated reinforcement