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STRAIN RATE EFFECT ON THE TENSILE BEHAVIOUR OF ULTRA- HIGH PERFORMANCE STEEL FIBER REINFORCED CONCRETE



Author(s): Veronika Goglin (1), Götz Hüsken (1), Hans-Carsten Kühne (1), H.J.H. Brouwers (2)
Paper category: Proceedings
Book title: SynerCrete’18 International Conference on Interdisciplinary Approaches for Cement-based Materials and Structural Concrete
Editor(s): Miguel Azenha, Dirk Schlicke, Farid Benboudjema, Agnieszka Jędrzejewska
ISBN: 978-2-35158-202-2
e-ISBN: 978-2-35158-203-9
Publisher: RILEM Publications SARL
Publication year: 2018
Pages: 1005-1010
Total Pages: 6
Language : English


Abstract: For the design and application of concrete structures exposed to high-dynamic loading scenarios, e.g. caused by vehicular impact or seismic events, profound knowledge on the rate sensitive changes in the material behaviour is necessary. Based on its ductile behaviour undertensile loading, ultra-high performance steel fiber reinforced concrete (UHPFC) is a suitable material when it comes to high-dynamic mechanical impacts. Therefore, this research investigated experimentally the strain rate effect on the mechanical behaviour of UHPFC under direct tensile loading. The uniaxial tensile tests were performed on small sized dumbbell shaped specimens at different strain rates, ranging from quasi-static to seismic loading conditions of up to 0.5 1/s. Material parameters of single and hybrid steel fiber reinforced UHPFCs were evaluated regarding first and post cracking stresses, strain capacity, as well as energy absorption capacity. The strain rate effect was expressed by the dynamic increase factor (DIF), describing the ratio between dynamic and quasi-static response.


Online publication : 2018
Publication type : full_text
Public price (Euros) : 0.00


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