Strengthening of hot-rolled S355 steel I-section beams using WAAM high strength steel
File(s)
Published version
Author(s)
Yang, Jiachi
Wadee, M Ahmer
Gardner, Leroy
Type
Journal Article
Abstract
An experimental investigation to assess the major-axis flexural behaviour of 12 hot-rolled S355 steel I-section beams strengthened by the addition of high strength steel (HSS) through wire arc additive manufacturing (WAAM) is presented. The geometry of the beam specimens was obtained by means of 3D laser scanning. The mechanical properties of both the hot-rolled and the WAAM steel were determined through monotonic tensile testing. Physical testing of the strengthened beam specimens was conducted. The results showed that the WAAM strengthening led to dramatic increases in bending resistances of between 35% and 80% under four-point bending, and of between 30% and 85% under three-point bending, for increases in mass of between just 5% and 15% respectively. At the same time, the specimens exhibited good ductility, despite the high strength of the WAAM additions. The presented experimental results, which are the first of their kind, successfully demonstrate the applicability of the proposed strengthening approach for both new and retrofitted steel beams, and the game-changing potential for enhancements in structural efficiency and reductions in embodied carbon in the construction industry.
Date Issued
2025-10-01
Date Acceptance
2025-05-09
Citation
Thin-Walled Structures, 2025, 215 (Part A)
ISSN
0263-8231
Publisher
Elsevier BV
Start Page
113437
End Page
113437
Journal / Book Title
Thin-Walled Structures
Volume
215
Issue
Part A
Copyright Statement
© 2025 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
License URL
Identifier
10.1016/j.tws.2025.113437
Publication Status
Published
Article Number
113437
Date Publish Online
2025-05-27