Periodic monitoring of a 33 year old reinforced concrete bridge deck in Haymarket,Virginia was performed as a part of the Long Term Bridge Performance Program (LTBPP). Thebridge carries southbound U.S. Route 15 over Interstate 66. The use of several different non-destructive testing (NDT) methods has allowed monitoring of the progression of corrosionactivity and damage over a two year period. The Route 15 bridge was completely surveyedusing NDT methods in September of 2009 and again in August 2011. The NDT methods thatwere utilized for detection of corrosion activity and damage were half-cell potential (HCP),electrical resistivity (ER), ground penetrating radar (GPR), and chain drag (CD)/hammersounding. Presented are the findings regarding corrosion and deterioration of the deck over timeas identified through the use of NDT. Comparison between different NDT methods were madethat show relationships between the results of different NDT methods. The comparisonsindicated several correlations between methods that identify threshold values and the methods’ability to identify corrosion at different states of the deterioration process.
展开▼
