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Title:	Einfluss der Stahlfaserzugabe auf die Spannungs-Dehnungs-Linie von Beton unter Druckbeanspruchung
Abstract:	Aus zahlreichen Forschungsarbeiten ist bekannt, dass sich durch die Zugabe von Stahlfasern die Verformungseigenschaften und der Bruchmechanismus von Beton unter Druckbeanspruchung beeinflussen lassen (u. a. [1-3]). Um zukünftig die Eigenschaften von Stahlfaserbeton bei der Entwicklung robuster druckbeanspruchter Stahlbetonbauteile berücksichtigen zu können, ist ein Ansatz zur Beschreibung der Spannungs-Dehnungs-Linie von Stahlfaserbeton erforderlich. Am iBMB der Technischen Universität Braunschweig wurden experimentelle Untersuchungen durchgeführt, auf Basis derer ein für die praxisüblichen Stahlfasertypen geeigneter Ansatz zur Beschreibung der Spannungs-Dehnungs-Linie von Stahlfaserbeton unter Druckbeanspruchung entwickelt worden ist. Der neuartige Ansatz berücksichtigt die Stahlfasertragwirkung über materialspezifische Kennwerte in Anlehnung an die DAfStb-Richtlinie “Stahlfaserbeton” [4]. Influence of steel fibers on the stress strain relationship of concrete under compression Numerous research projects have shown that the deformation behavior and the failure characteristics of concrete under compression can be influenced by steel fiber addition (e. g. [1-3]). In order to take the characteristics of steel fiber reinforced concrete into account in the future development of robust compressive loaded building members made of reinforced concrete, an approach to describe the stress strain relationship of steel fiber reinforced concrete is required. On the basis of experimental investigations carried out at the iBMB of the Technical University of Braunschweig an approach to describe the stress strain relationship of steel fiber reinforced concrete under compression has been developed which is suitable for common steel fiber types. The innovative approach describes the steel fiber effect on material-specific parameters according to the DAfStb guideline “Stahlfaserbeton” [4].
Source:	Beton- und Stahlbetonbau 112 (2017), No. 4
Page/s:	228-237
Language of Publication:	German

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