Sustained Loading Bond Response and Post-Sustained Loading Behaviour of NSM CFRP-Concrete Elements under Different Service Temperatures
dc.contributor.author
dc.date.accessioned
2021-09-28T09:12:15Z
dc.date.available
2021-09-28T09:12:15Z
dc.date.issued
2021-09-14
dc.identifier.uri
dc.description.abstract
Nowadays, one of the foremost procedures for strengthening concrete structures is the Near-Surface Mounted (NSM) technique. This paper presents an experimental study on the effect sustained loading and different service temperatures (steady and cyclic) have on NSM Carbon Fibre-Reinforced Polymer (CFRP)-concrete bonded joints and their post-sustained loading load-slip behaviour. Four experimental campaigns using eight NSM CFRP-concrete specimens were performed by employing two different service load levels (15% and 30% of the ultimate load) and combining two groove thicknesses (7.5 and 10 mm) and two bonded lengths (150 and 225 mm). Two steady state temperatures (20 and 40 °C) and two cyclic service temperatures (ranging between 20 and 40 °C) were programmed. The slip obtained was proportional to the sustained load level. Furthermore, higher slips were registered for specimens under higher mean temperatures in the cycle. After 1000 h of sustained load testing, the specimens were tested under monotonic loading until failure (post-sustained loading tests). In general, the ratio between the post-sustained loading ultimate load and the instantaneous ultimate load was close to the unity, although some differences were perceived in series S2 (steady 37.7 °C) with a mean increase of 6.3%, and series S3-B (cyclic temperature ranging between 24.6 and 39.2 °C) with a mean reduction of 9%
dc.description.sponsorship
This research was funded by the Spanish Ministry of Science, Innovation and Universities, (projects BIA2007-84975-S2-2-P and BIA2007-84975-S2-1-P) and the University of Girona (grant number IFUdG2018/18)
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
MDPI (Multidisciplinary Digital Publishing Institute)
dc.relation
BIA2007-84975-S2-2-P
BIA2007-84975-S2-1-P
dc.relation.isformatof
Reproducció digital del document publicat a: https://doi.org/10.3390/app11188542
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Applied Sciences, 2021, vol. 11, núm. 18, p. 8542
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Articles publicats (D-EMCI)
dc.rights
Attribution 4.0 International
dc.rights.uri
dc.subject
dc.title
Sustained Loading Bond Response and Post-Sustained Loading Behaviour of NSM CFRP-Concrete Elements under Different Service Temperatures
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/openAccess
dc.type.version
info:eu-repo/semantics/publishedVersion
dc.identifier.doi
dc.identifier.idgrec
033842
dc.type.peerreviewed
peer-reviewed
dc.identifier.eissn
2076-3417