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Analysis of surface-damage through concrete imaging



Title: Analysis of surface-damage through concrete imaging
Author(s): Shahid Kabir, Patrice Rivard
Paper category : conference
Book title: 2nd International RILEM Symposium on Advances in Concrete through Science and Engineering
Editor(s): J. Marchand, B. Bissonnette, R. Gagné, M. Jolin and F. Paradis
Print-ISBN: 2-35158-003-6
e-ISBN: 2351580028
Publisher: RILEM Publications SARL
Publication year: 2006
Nb references: 22
Language: English


Abstract: Concrete imaging techniques for damage analysis are showing great potential as improved, reliable automated tools for evaluating concrete structures, particularly in bridge inspections. These imaging methods can provide current information concerning the condition of concrete and are becoming a real complement to visual inspection. This research proposes the analysis of surface AAR map-cracking in bridge decks using thermal, colour and greyscale imagery, from which the following concrete deterioration features: total amount of cracking, total length of cracks, and range of crack widths, are characterized and measured using texture analysis and an artificial neural network. Images were obtained of AAR-induced surface crack networks in a bridge component at the St. Lambert Lock in Montreal (Québec), and in sections of various bridges located in Sherbrooke (Québec), as well as in laboratory specimens that were exposed to AAR indoors and outside. The experiments indicate that infrared thermography is comparatively more effective for analyzing surface damage in concrete than colour or greyscale imagery, producing results with higher accuracies for the various specimens.

Keywords: artificial neural network, image analysis, infrared thermography, assessment


Online publication: 2006-08-02
Classification: 3.3 Theme 3: Monitoring, Repair and Maintenance of Concrete Structures
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2351580028.096


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