Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/11488
DC FieldValueLanguage
dc.contributorDepartment of Civil and Environmental Engineering-
dc.contributorDepartment of Building and Real Estate-
dc.creatorLai, WL-
dc.creatorKou, SC-
dc.creatorPoon, CS-
dc.creatorTsang, WF-
dc.creatorLai, CC-
dc.date.accessioned2015-07-14T01:27:37Z-
dc.date.available2015-07-14T01:27:37Z-
dc.identifier.issn0950-0618-
dc.identifier.urihttp://hdl.handle.net/10397/11488-
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.subjectAccelerated exposure conditionsen_US
dc.subjectDelaminationen_US
dc.subjectExternally-bonded CFRP and concrete compositesen_US
dc.subjectQuantitative infrared thermography (IRT)en_US
dc.titleEffects of elevated water temperatures on interfacial delaminations, failure modes and shear strength in externally-bonded CFRP-concrete beams using infrared thermography, gray-scale images and direct shear testen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage3152-
dc.identifier.epage3160-
dc.identifier.volume23-
dc.identifier.issue10-
dc.identifier.doi10.1016/j.conbuildmat.2009.06.012-
dcterms.abstractThis paper reports the results of a durability study of the effects of exposing externally-bonded CFRP-concrete beams to three elevated water temperatures (25 °C, 40 °C and 60 °C). The effects of the heated water environments on the adhesive bonding layer between the CFRP and concrete beams were evaluated by quantifying: (1) the changes of delaminations within the adhesive bonding layer, (2) the changes in resistance to direct shear force and (3) the changes of failure mode distribution. Before the exposure, the condition of the adhesive bonding layer was inspected by infrared thermography (IRT). After exposure, the deterioration of the same bonding layer and failure mode distributions were measured by analyzing the visual photos on the failed CFRP strips. The failure modes were found to be affected largely by the combined effect of elevated temperature and moisture ingress, in which three types were identified: failure at concrete beams, at adhesive bonding layer and interface between CFRP strip and concrete. With these methods, results of 54 specimens show that the adhesive bonding layers of all the specimens had gradually deteriorated in the 40 °C and 60 °C water baths. This deterioration was due to the weakening of the adhesive bonding layers when the glass transition temperature (T g) or the heat distortion temperature (HDT) was approached or even exceeded, and gradual development of delaminations at adhesive bonding layer.-
dcterms.bibliographicCitationConstruction and building materials, 2009, v. 23, no. 10, p. 3152-3160-
dcterms.isPartOfConstruction and building materials-
dcterms.issued2009-
dc.identifier.isiWOS:000269428400008-
dc.identifier.scopus2-s2.0-67651205233-
dc.identifier.rosgroupidr50106-
dc.description.ros2009-2010 > Academic research: refereed > Publication in refereed journal-
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