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Compressive behaviour of alkali-activated slag-based concrete and Portland cement concrete incorporating novel multiple hooked-end steel fibres

Rossi, Laura 1,2; Patel, Ravi A. 1,2; Dehn, Frank 1,2
1 Materialprüfungs- und Forschungsanstalt Karlsruhe (MPA), Karlsruher Institut für Technologie (KIT)
2 Institut für Massivbau und Baustofftechnik (IMB), Karlsruher Institut für Technologie (KIT)

Abstract:

This study investigates the effect of single and multiple hooked-end steel fibres on the mechanical properties of alkali-activated slag-based concrete (AASC) and compares its performance with a similar strength-grade Portland cement concrete (PCC). Three different fibre geometries, i.e. single (Dramix® 3D), double (Dramix® 4D) and triple hooked-end (Dramix® 5D) steel fibres, and three different volume fractions, i.e. 0.25%, 0.50% and 0.75% are considered. Compressive strength, modulus of elasticity and stress–strain response under uniaxial compression are evaluated. Hooked-end steel fibres have a limited effect on the compressive strength and modulus of elasticity of both AASC and PCC, regardless of fibre geometry and content. Although hooked-end steel fibres improve the compressive stress–strain behaviour of both composites, higher enhancement of peak stress, corresponding strain and post-peak response is observed for fibre-reinforced AASC (FRAASC) mixtures. To predict the stress–strain response under uniaxial compression of steel FRAASC a new analytical model is proposed and calibrated using an extensive dataset of experimental stress–strain curves available in the literature for both steel fibre-reinforced PCC and AASC. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000159390
Veröffentlicht am 14.07.2023
Originalveröffentlichung
DOI: 10.1617/s11527-023-02180-2
Scopus
Zitationen: 9
Web of Science
Zitationen: 8
Dimensions
Zitationen: 11
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Massivbau und Baustofftechnik (IMB)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 06.2023
Sprache Englisch
Identifikator ISSN: 1359-5997, 0025-5432, 1871-6873
KITopen-ID: 1000159390
Erschienen in Materials and Structures/Materiaux et Constructions
Verlag Springer
Band 56
Heft 5
Seiten Art.-Nr.: 96
Vorab online veröffentlicht am 21.05.2023
Schlagwörter Hooked-end steel fibres, Alkali-activated fibre-reinforced concrete, Slag concrete, Mechanical properties, Stress–strain behaviour
Nachgewiesen in Scopus
Web of Science
Dimensions
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