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FRP bar-reinforced ultra-high-performance concrete plates with a grouting sleeve connection: development and flexural behavior

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dc.contributor.authorZeng, J.J.
dc.contributor.authorChen, S.P.
dc.contributor.authorFeng, P.
dc.contributor.authorZhuge, Y.
dc.contributor.authorPeng, K.D.
dc.contributor.authorDai, J.G.
dc.contributor.authorFan, T.H.
dc.date.issued2023
dc.description.abstractFiber reinforced polymer (FRP) bars have been proposed for use in ultra-high performance concrete (UHPC) as the reinforcement to mitigate/avoid the post-peak strain softening of UHPC under tension and to reduce the fiber dosage used in UHPC. The so-formed FRP-reinforced UHPC plates could be adopted for both structural strengthening and constructing novel structural elements. In this paper, a novel connection based on FRP bars and steel grouting sleeves has been developed for prefabrication construction of FRP bar-reinforced UHPC structures. Flexural tests were conducted to gain understandings of the effects of the connection mode (the staggered connection and the horse tooth connection) and reinforcing fiber type (polyethylene (PE) fibers and steel fibers) in the UHPC on the flexural behavior of connected FRP bar-reinforced-UHPC composite plates. The test results revealed that the proposed connection system is reliable since the composite plates always failed outside the connection zone, and most of the crack opening displacements at the interface of the connection are smaller than 0.2 mm at ultimate. The connection mode and the fiber type had little influence on the first cracking load and the initial bending stiffness of the FRP bar-reinforced UHPC plates, while the horse tooth connection led to a better ductility of the composites plates than the staggered connection mode. At given tolerable deflection of 1/200 span (about 5 mm), the longitudinal strains developed in the CFRP bars were about 2000 με for all specimens.
dc.identifier.citationEngineering structures, 2023; 287(116164):1-11
dc.identifier.doi10.1016/j.engstruct.2023.116164
dc.identifier.issn0141-0296
dc.identifier.issn1873-7323
dc.identifier.orcidZhuge, Y. [0000-0003-1620-6743]
dc.identifier.urihttps://hdl.handle.net/11541.2/34058
dc.language.isoen
dc.publisherElsevier
dc.relation.fundingNatural Science Foundation of Guangdong Province 2019A1515011637
dc.relation.fundingNatural Science Foundation of Guangdong Province 2021A0505060008
dc.relation.fundingHong Kong Innovation and Technology Fund ITS/077/18FX
dc.rightsCopyright 2023. The Author(s). This is an open access article under the CC BY-NC-ND license. (http://creativecommons.org/licenses/by-nc-nd/4.0/)
dc.source.urihttps://doi.org/10.1016/j.engstruct.2023.116164
dc.subjectfiber-reinforced polymer (FRP)
dc.subjectFRP bar
dc.subjectultra-high-performance concrete (UHPC)
dc.subjectgrouting sleeve
dc.subjectflexural behavior
dc.titleFRP bar-reinforced ultra-high-performance concrete plates with a grouting sleeve connection: development and flexural behavior
dc.typeJournal article
pubs.publication-statusPublished
ror.fileinfo12262889090001831 13262889080001831 FRP bar-reinforced ultra-high-performance concrete plates with a grouting sleeve connection: development and flexural behavior
ror.mmsid9916734926401831

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