Elevated temperature characteristics of steel reinforcement incorporating threaded mechanical couplers

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Title: Elevated temperature characteristics of steel reinforcement incorporating threaded mechanical couplers
Authors: Bompa, DV
Elghazouli, AY
Item Type: Journal Article
Abstract: This paper presents an experimental study into the influence of elevated temperatures on the mechanical properties of hot-rolled steel reinforcement which is spliced using two alternative types of threaded couplers. The investigation includes tests performed under steady-state and transient elevated temperature conditions for reinforcement bars of 16 mm and 20 mm diameter. For comparison purposes, tests carried out under ambient conditions and for non-spliced reinforcement bars are also included in the study. After describing the experimental arrangement and instrumentation, including purpose-adapted digital image correlation techniques, a detailed account of the test results is given. In addition to offering a direct evaluation of the temperature-dependent stiffness and strength properties, the test results provide an assessment of the complete stress-strain response. The strain hardening and ductility properties are also determined as a function of temperature for both spliced and non-spliced specimens. It is shown that the presence of couplers typically influences the ductility characteristics of threaded splices at elevated temperature as a function of the type and geometry of the couplers, whilst the stiffness and strength properties are largely similar to those of their non-spliced counterparts. The performance characteristics obtained from the detailed test measurements are used within the discussions to highlight issues relevant for application in practice.
Issue Date: 1-Mar-2019
Date of Acceptance: 28-Dec-2018
URI: http://hdl.handle.net/10044/1/65453
DOI: https://doi.org/10.1016/j.firesaf.2018.12.006
ISSN: 0379-7112
Publisher: Elsevier BV
Start Page: 8
End Page: 21
Journal / Book Title: Fire Safety Journal
Volume: 104
Copyright Statement: © 2018 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/.
Keywords: Science & Technology
Engineering, Civil
Materials Science, Multidisciplinary
Materials Science
Elevated temperatures
Steel reinforcement
Reinforcement splices
Threaded mechanical couplers
Civil Engineering
0904 Chemical Engineering
0911 Maritime Engineering
Publication Status: Published
Embargo Date: 2019-12-29
Online Publication Date: 2018-12-29
Appears in Collections:Faculty of Engineering
Civil and Environmental Engineering

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