TY - GEN
T1 - Assessing impact-echo test variables for detecting loss of bond in RC bridge columns
AU - Pagnotta, A.
AU - Gardoni, P.
AU - Trejo, D.
AU - Huang, Q.
PY - 2012
Y1 - 2012
N2 - Previous studies have identified the impact-echo method as a viable technique for detecting voids around steel reinforcing bars in reinforced concrete (RC) members. Voids can form around reinforcement as a result of corrosion, alkali-silica reactions, delayed ettringite formation, freezing and thawing, and other deterioration mechanisms. This paper investigates the limitations of impact-echo scanning with respect to multiple experimental variables. A small-scale experimental setup for making this determination is designed. Variables in the experiment include void thickness, void length, and the interval at which impact-echo tests are performed. Impact-echo results from a small-scale experimental design are presented and interpreted to determine detectable void sizes given the interval at which tests are performed.
AB - Previous studies have identified the impact-echo method as a viable technique for detecting voids around steel reinforcing bars in reinforced concrete (RC) members. Voids can form around reinforcement as a result of corrosion, alkali-silica reactions, delayed ettringite formation, freezing and thawing, and other deterioration mechanisms. This paper investigates the limitations of impact-echo scanning with respect to multiple experimental variables. A small-scale experimental setup for making this determination is designed. Variables in the experiment include void thickness, void length, and the interval at which impact-echo tests are performed. Impact-echo results from a small-scale experimental design are presented and interpreted to determine detectable void sizes given the interval at which tests are performed.
UR - https://www.scopus.com/pages/publications/84863978294
UR - https://www.scopus.com/pages/publications/84863978294#tab=citedBy
U2 - 10.1201/b12352-539
DO - 10.1201/b12352-539
M3 - Conference contribution
AN - SCOPUS:84863978294
SN - 9780415621243
T3 - Bridge Maintenance, Safety, Management, Resilience and Sustainability - Proceedings of the Sixth International Conference on Bridge Maintenance, Safety and Management
SP - 3602
EP - 3608
BT - Bridge Maintenance, Safety, Management, Resilience and Sustainability - Proceedings of the Sixth International Conference on Bridge Maintenance, Safety and Management
PB - Taylor and Francis - Balkema
T2 - 6th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2012
Y2 - 8 July 2012 through 12 July 2012
ER -