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Behavior of ultra-high performance concrete under true tri-axial compression

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dc.contributor.authorZeng, J.J.
dc.contributor.authorChen, J.D.
dc.contributor.authorLiao, J.J.
dc.contributor.authorChen, W.J.
dc.contributor.authorZhuge, Y.
dc.contributor.authorLiu, Y.
dc.date.issued2024
dc.description.abstractConfinements have been adopted to alleviate the brittleness of ultra-high performance concrete (UHPC). However, as the foundation of confinement mechanism, the research on behavior of UHPC under tri-axial compression is rather limited. Furthermore, the confinement mechanism of PE fiber-strengthened UHPC (PE-UHPC) has not been reported yet. To this end, conventional and true tri-axial compression tests were performed for 22 UHPC cubes with different PE fiber lengths and various lateral confining stresses. The typical axial stress-strain curve has a long elastic ascending stage, a relatively short plastic ascending stage and a steep post-peak decline stage. Increasing the lateral confining stresses could extend the elastic ascending stage, and make the plastic ascending stage longer and clearer. Furthermore, the reinforcement effect of longer PE fibers became more pronounced with increasing lateral confining stresses. However, only increasing intermediate principal stresses with minor principal stresses unchanged had minor effect on the axial strain-volumetric strain behavior.
dc.identifier.citationConstruction and Building Materials, 2024; 411
dc.identifier.doi10.1016/j.conbuildmat.2023.134450
dc.identifier.issn0950-0618
dc.identifier.issn1879-0526
dc.identifier.orcidZhuge, Y. [0000-0003-1620-6743]
dc.identifier.urihttps://hdl.handle.net/11541.2/37223
dc.language.isoen
dc.publisherELSEVIER SCI LTD
dc.relation.fundingNatural Science Foundation of Guangdong Province 2021A0505060008
dc.relation.fundingNatural Science Foundation of Guangdong Province 2021B1515020029
dc.relation.fundingNatural Science Foundation of Guangdong Province 2022A1515240008
dc.relation.fundingARC DE220100406
dc.relation.fundingInternational Science and Technology Innovation Center Construction Fund Project of the Guangdong-Hong Kong-Macao Greater Bay Area 2021A0505110016
dc.relation.fundingGuangdong Provincial Key Laboratory of Intelligent Disaster Prevention and Emergency Technologies for Urban Lifeline Engineering 2022B1212010016
dc.relation.granthttp://purl.org/au-research/grants/arc/2022B1212010016
dc.rightsCopyright 2023 Elsevier Ltd.
dc.source.urihttps://doi.org/10.1016/j.conbuildmat.2023.134450
dc.subjectPE fibers
dc.subjectstress-strain behavior
dc.subjecttri-axial compression
dc.subjectultra-high-performance concrete (UHPC)
dc.subjectvolumetric strain
dc.titleBehavior of ultra-high performance concrete under true tri-axial compression
dc.typeJournal article
pubs.publication-statusPublished
ror.mmsid9916819131201831

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