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Abstract:	In den europäischen Zulassungen liegen keine Angaben darüber vor, ob sich für Befestigungsmittel das Tragverhalten durch Stahlfasern im Beton verändert. Bei ausreichend hohem Stahlfasergehalt und idealer Faserausrichtung könnten die Stahlfasern im Beton das Tragverhalten von Befestigungsmitteln verbessern. Es könnten höhere Bruchlasten und ein duktileres Tragverhalten erzielt werden. Gleichzeitig besteht die Möglichkeit, dass die im Beton enthaltenen Stahlfasern die Montage der Dübel erschweren oder das Tragverhalten aufgrund von ungleichmäßiger Verteilung negativ beeinflussen könnten. Daher wurde speziell das Tragverhalten von Befestigungsmitteln in Industriefußböden untersucht, welche zu den wichtigsten Anwendungsgebieten des Stahlfaserbetons zählen. Dazu wurden zentrische Zugversuche im ungerissenen Beton mit verschiedenen Dübeln, darunter Metallspreizdübel, Schraubanker und Verbunddübel, in Betonen mit unterschiedlichen Mischungsentwürfen und unterschiedlichen Stahlfasergehalten durchgeführt. Behaviour of anchor systems in steel fibre reinforced concrete The behaviour of anchors in steel fibre reinforced concrete is still rather unknown and not regulated in the European Technical Approvals. At an adequate content of steel fibres around the dowels, oriented in an optimal direction, the steel fibres could improve the load bearing capacity as well as the ductility of anchors in concrete. However, there might also be an unfavourable effect on the installation process or even on the load carrying capacity due to disadvantageous fibre orientation. Especially the behaviour of anchors in industrial floors, one of the major application ranges of steel fibre reinforced concrete, should thus be analysed. Therefore tension tests in non-cracked concrete were carried out using different kinds of anchor systems containing a screw anchor, bonded anchors and a torque controlled expansion anchor and different kinds of concrete. The content of steel fibres in the concrete member was also varied.
Source:	Bautechnik 89 (2012), No. 8
Page/s:	545-552
Language of Publication:	German

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