Concrete Bridge Condition Assessment with Impact Echo Scanning
Publication: Emerging Technologies for Material, Design, Rehabilitation, and Inspection of Roadway Pavements
Abstract
The paper discusses the use of the Impact Echo Scanning nondestructive evaluation (NDE) technique for quality assurance and condition assessment of the grouting of post-tensioned bridge ducts and concrete bridge decks. Both research and case history results are presented. Impact Echo Scanning was first done for detecting void/grout conditions in post-tensioned ducts. Recent research and development of a Bridge Deck Scanner using the Impact Echo Scanning technique is compared with Ground Penetrating Radar and Acoustic Chain Drag Sounding to identify concrete delaminations due to rebar corrosion. The research on both Impact Echo Scanning applications was sponsored by the US National Cooperative Highway Research Innovations Deserving Exploratory Analysis program. The use of the Bridge Deck Scanner to evaluate concrete deck conditions in terms of void/honeycomb and thickness is also discussed.
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Information
Published In
Copyright
© 2011 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
ASCE Technical Topics:
- Architectural engineering
- Bridge decks
- Bridge engineering
- Bridge tests
- Bridges
- Bridges (by material)
- Building systems
- Case studies
- Computer vision and image processing
- Concrete
- Concrete bridges
- Decks
- Duct
- Engineering fundamentals
- Engineering materials (by type)
- Field tests
- HVAC
- Material mechanics
- Material properties
- Materials engineering
- Mechanical properties
- Methodology (by type)
- Research methods (by type)
- Structural engineering
- Structural systems
- Tension
- Tests (by type)
Authors
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