Nondestructive evaluation techniques and acoustic emission for damage assessment of concrete bridge in marine environment

A. B. Suma, R. M. Ferraro, B. Metrovich, F. Matta, A. Nanni

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

7 Scopus citations


Non-destructive evaluation techniques were used to assess the condition of a 40-year old concrete bridge operating in an aggressive marine environment. The bridge's superstructure includes both reinforced and prestressed concrete one-way slabs, and experienced widening, repairs, and recently strengthening by means of externally bonded carbon fiber reinforced polymer (CFRP) laminates. Phase I of the investigation focused on evaluating deterioration of concrete and steel reinforcement by means of in-situ and laboratory testing. A 24 in. by 24 in. [610 by 610 mm] grid was marked on the bottom surface of the supporting slabs to map indicators of physical damage. Measurement of carbonation, pH, chloride content, corrosion potential, and visual inspection were implemented and rendered as layered maps to identify damaged areas. Phase II includes acoustic emission (AE) monitoring under service loads. AE amplitude, duration, energy and hits were analyzed to identify structural activity associated with damage phenomena, such as concrete cracking, slip between corroded reinforcement and surrounding concrete, and debonding of CFRP laminates. The database acquired from Phase I and Phase II was used for damage assessment. Combined results from the different techniques show promise in determining areas of concern with reduced uncertainty than when using a single measurement technique.

Original languageEnglish (US)
Title of host publicationRecent Advances in Maintenance and Repair of Concrete Bridges - Papers Presented at the ACI Spring 2010 Convention
Number of pages20
Edition277 SP
StatePublished - Dec 1 2010
EventACI Spring 2010 Convention - Chicago, IL, United States
Duration: Mar 21 2010Mar 25 2010

Publication series

NameAmerican Concrete Institute, ACI Special Publication
Number277 SP
ISSN (Print)0193-2527


OtherACI Spring 2010 Convention
Country/TerritoryUnited States
CityChicago, IL


  • Bridge
  • Chemical assessment
  • Corrosion
  • Field testing
  • FRP strengthening
  • Health monitoring
  • Nondestructive evaluation
  • Prestressed concrete
  • Reinforced concrete

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)


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