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Article: Experimental and numerical investigation of post-tensioned concrete flat slabs in fire

TitleExperimental and numerical investigation of post-tensioned concrete flat slabs in fire
Authors
Wei, YAu, FTKLi, JTsang, NCM
KeywordsFire resistance
Concrete spalling
Fire
High-strength self-compacting concrete
Post-tensioned flat slab
Issue Date2016
PublisherEmerald Group Publishing Limited. The Journal's web site is located at http://www.emeraldinsight.com/loi/jsfe
Citation
Journal of Structural Fire Engineering, 2016, v. 7 n. 1, p. 2-18 How to Cite?
DOI: http://dx.doi.org/10.1108/JSFE-03-2016-001
AbstractPurpose This paper aims to understand the structural fire performance of two-way post-tensioned flat slabs, particularly their deformations and load-carrying mechanisms in fire, and to explore the behaviour of post-tensioned high-strength self-compacting concrete flat slabs with unbonded tendons in fire. Design/methodology/approach Four tests of post-tensioned high-strength self-compacting concrete flat slabs were conducted under fire conditions. Numerical modelling using the commercial package ABAQUS was conducted to help interpret the test results. Findings Two of the specimens with lower moisture contents demonstrated excellent fire resistance performance, while the others with slightly higher moisture contents experienced severe concrete spalling. Originality/value The test results were discussed in respect of thermal profiles, deflections, crack patterns and concrete spalling. The performance of post-tensioned high-strength self-compacting concrete flat slabs with unbonded tendons under fire conditions was better understood.
Persistent Identifierhttp://hdl.handle.net/10722/219113
ISSN
2040-2317
2020 SCImago Journal Rankings: 0.479
ISI Accession Number ID
WOS:000387711700001

 

DC FieldValueLanguage
dc.contributor.authorWei, Y-
dc.contributor.authorAu, FTK-
dc.contributor.authorLi, J-
dc.contributor.authorTsang, NCM-
dc.date.accessioned2015-09-18T07:13:32Z-
dc.date.available2015-09-18T07:13:32Z-
dc.date.issued2016-
dc.identifier.citationJournal of Structural Fire Engineering, 2016, v. 7 n. 1, p. 2-18-
dc.identifier.issn2040-2317-
dc.identifier.urihttp://hdl.handle.net/10722/219113-
dc.description.abstractPurpose This paper aims to understand the structural fire performance of two-way post-tensioned flat slabs, particularly their deformations and load-carrying mechanisms in fire, and to explore the behaviour of post-tensioned high-strength self-compacting concrete flat slabs with unbonded tendons in fire. Design/methodology/approach Four tests of post-tensioned high-strength self-compacting concrete flat slabs were conducted under fire conditions. Numerical modelling using the commercial package ABAQUS was conducted to help interpret the test results. Findings Two of the specimens with lower moisture contents demonstrated excellent fire resistance performance, while the others with slightly higher moisture contents experienced severe concrete spalling. Originality/value The test results were discussed in respect of thermal profiles, deflections, crack patterns and concrete spalling. The performance of post-tensioned high-strength self-compacting concrete flat slabs with unbonded tendons under fire conditions was better understood.-
dc.languageeng-
dc.publisherEmerald Group Publishing Limited. The Journal's web site is located at http://www.emeraldinsight.com/loi/jsfe-
dc.relation.ispartofJournal of Structural Fire Engineering-
dc.subjectFire resistance-
dc.subjectConcrete spalling-
dc.subjectFire-
dc.subjectHigh-strength self-compacting concrete-
dc.subjectPost-tensioned flat slab-
dc.titleExperimental and numerical investigation of post-tensioned concrete flat slabs in fire-
dc.typeArticle-
dc.identifier.emailAu, FTK: francis.au@hku.hk-
dc.identifier.authorityAu, FTK=rp00083-
dc.description.naturepostprint-
dc.identifier.doi10.1108/JSFE-03-2016-001-
dc.identifier.scopuseid_2-s2.0-84992649507-
dc.identifier.hkuros253451-
dc.identifier.volume7-
dc.identifier.issue1-
dc.identifier.spage2-
dc.identifier.epage18-
dc.identifier.isiWOS:000387711700001-
dc.publisher.placeUnited Kingdom-
dc.identifier.issnl2040-2317-

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