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

Y. Wei; F.T.K. Au; J. Li; Neil C.M. Tsang

doi:10.1108/JSFE-03-2016-001

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

Y. Wei, F.T.K. Au, J. Li, Neil C.M. Tsang

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

270 Downloads (Pure)

Abstract

Purpose: 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.

Original language	English
Pages (from-to)	2-18
Journal	Journal of Structural Fire Engineering
Volume	7
Issue number	1
DOIs	https://doi.org/10.1108/JSFE-03-2016-001
Publication status	Published - 2016

Bibliographical note

This article is (c) Emerald Group Publishing and permission has been granted for this version to appear here https://curve.coventry.ac.uk/open/items/ce7f2ff9-cac2-405f-b640-7574a31fb3fd/1/ . Emerald does not grant permission for this article to be further copied/distributed or hosted elsewhere without the express permission from Emerald Group Publishing Limited.

Keywords

Fire resistance
Concrete spalling
Fire
High-strength self-compacting concrete
Post-tensioned flat slab
Crack patterns

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10.1108/JSFE-03-2016-001

Experimental and numericalAccepted author manuscript, 3.76 MB

http://www.emeraldinsight.com/doi/full/10.1108/JSFE-03-2016-001

Neil Tsang
- School of Energy, Construction and Environment - Curriculum Lead Associate Professor - Academic
Person: Teaching and Research

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title = "Experimental and numerical investigation of post-tensioned concrete flat slabs in fire",

abstract = "Purpose: 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. ",

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author = "Y. Wei and F.T.K. Au and J. Li and Tsang, {Neil C.M.}",

note = "This article is (c) Emerald Group Publishing and permission has been granted for this version to appear here https://curve.coventry.ac.uk/open/items/ce7f2ff9-cac2-405f-b640-7574a31fb3fd/1/ . Emerald does not grant permission for this article to be further copied/distributed or hosted elsewhere without the express permission from Emerald Group Publishing Limited.",

year = "2016",

doi = "10.1108/JSFE-03-2016-001",

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volume = "7",

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N2 - Purpose: 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.

AB - Purpose: 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.

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JO - Journal of Structural Fire Engineering

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

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Bibliographical note

Keywords

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