Applicability of GPR and a rebar detector to obtain rebar information of existing concrete structures

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dc.contributor.authorRathod, Harsh
dc.contributor.authorDebeck, Scott
dc.contributor.authorChow, Brian
dc.date.accessioned2019-06-17T16:26:18Z
dc.date.available2019-06-17T16:26:18Z
dc.date.copyright2019en_US
dc.date.issued2019
dc.description.abstractMuch of Canada’s existing infrastructure was constructed during 1950s, 1960s and 1970s. These include all transportation infrastructures such as bridges, highways, tunnels, etc. It is important to know the condition of these aging infrastructures in terms of their load carrying capacity to ensure their safety and serviceability. There are several old reinforced concrete slab bridges within the network of Ministry of Forests in B.C. Canada that have unknown rebar spacing, cover and diameter. This research paper discusses the application of Ground Penetrating Radar (GPR) and a Rebar detector in obtaining valuable information about rebar diameter, spacing and cover depth required to determine the structural capacity (load rating) of bridge decks. For this, GPR and the rebar detector have been applied on an existing bridge deck, a precast bridge girder and a reinforced concrete test slab panel available in the materials lab at the Facility for Innovative Materials and Infrastructure Monitoring (FIMIM) at the University of Victoria (UVic). To assess the applicability of GPR and Profoscope (Rebar Detector) in obtaining rebar information, the results obtained using both the techniques were compared in terms of their errors in determining all three parameters of rebar; diameter, spacing and cover depth. The results were validated by measuring the actual diameter, spacing and cover depth of the rebar in the reinforced concrete test slab available in the lab at UVic.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipThe authors would like to thank MFLNRO and India-Canada Centre of Excellence (IC-IMPACTS) for their financial support. The authors acknowledge co-op students; George Hill and Victoria Gagnon at MFLNRO for their help in the project. The authors also acknowledge the help from Butler Brothers in providing ready-mixed concrete at the University of Victoria and Surespan Structures for letting the authors access their facility for testing.en_US
dc.identifier.citationRathod, H., Debeck, S., Gupta, R. & Chow, B. (2019). Applicability of GPR and a rebar detector to obtain rebar information of existing concrete structures. Case Studies in Construction Materials, 11, e00240. https://doi.org/10.1016/j.cscm.2019.e00240en_US
dc.identifier.urihttps://doi.org/10.1016/j.cscm.2019.e00240
dc.identifier.urihttp://hdl.handle.net/1828/10925
dc.language.isoenen_US
dc.publisherCase Studies in Construction Materialsen_US
dc.subjectRebar characteristics
dc.subjectNon-destructive testing
dc.subjectAccuracy
dc.subjectGround penetrating radar
dc.subjectElectromagnetic field
dc.subjectRebar detector
dc.subject.departmentDepartment of Civil Engineering
dc.titleApplicability of GPR and a rebar detector to obtain rebar information of existing concrete structuresen_US
dc.typeArticleen_US

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