On the shear resistance of ferritic stainless steel composite slabs. (20th November 2018)

• Record Type: Journal Article
• Authors: Lauwens, Kathleen; Fortan, Maarten; Arrayago, Itsaso; Mirambell, Enrique; Rossi, Barbara
• Is Part Of: Construction & building materials. Volume 189(2018)
• Page Start: 728
• Page End: 735
• Publication Date: 2018-11-20
• Subjects: Ferritic stainless steel -- Composite floors -- Longitudinal shear resistance; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2018.09.003
• Languages: English
• ISSNs: 0950-0618

Abstract

Highlights: Longitudinal shear resistance of stainless steel composite slabs via experiments. The Partial Shear Connection (PSC) method is applied. The design value of the longitudinal shear resistance τu, Rd for stainless steel composite slabs is given. The ultimate resistance is compared to the one of slabs made of galvanized steel. Abstract: Steel-concrete composite floors are commonly used in construction due to their favourable weight-to-depth ratio and erection time. Typically, concrete is poured onto a galvanised steel deck acting as formwork. However in case of floors exposed to corrosive environments, stainless steel is likely to be chosen over galvanised steel. Besides its better corrosion resistance, stainless steel also offers desirable aesthetic appearance and good mechanical properties. Composite slabs can fail in bending, vertical shear or longitudinal shear. The latter failure mode is the most common, and its prediction depends on values obtained through full-scale tests. However, for stainless steel decks, no specific treatment exists in current design standards. This paper investigates the longitudinal shear resistance of stainless steel composite slabs through an experimental study. One short and three long span slabs, made using a Cofraplus 60 ferritic EN1.4003 stainless steel corrugated deck, are tested in accordance with Eurocode 4, annex B.3 [1]. The Partial Shear Connection (PSC) method is used to assess the longitudinal shear resistance. The experimental results, together with the results provided in Task 3.3 of the "Structural Applications of Ferritic Stainless Steels (SAFSS, RFSR-CT-2010-00026)" project [2], are used to draw conclusions on the applicability of ferritic stainless steel decks in composite floors.