Assessing impact-echo test variables for detecting loss of bond in RC bridge columns

A. Pagnotta, Paolo Gardoni, D. Trejo, Q. Huang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish (US)
Title of host publicationBridge Maintenance, Safety, Management, Resilience and Sustainability - Proceedings of the Sixth International Conference on Bridge Maintenance, Safety and Management
Pages3602-3608
Number of pages7
StatePublished - Jul 23 2012
Externally publishedYes
Event6th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2012 - Stresa, Lake Maggiore, Italy
Duration: Jul 8 2012Jul 12 2012

Publication series

NameBridge Maintenance, Safety, Management, Resilience and Sustainability - Proceedings of the Sixth International Conference on Bridge Maintenance, Safety and Management

Other

Other6th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2012
CountryItaly
CityStresa, Lake Maggiore
Period7/8/127/12/12

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Safety, Risk, Reliability and Quality

Fingerprint Dive into the research topics of 'Assessing impact-echo test variables for detecting loss of bond in RC bridge columns'. Together they form a unique fingerprint.

Cite this