Experimental investigation of pull-out response of composite connection made of UHPFRC material

Author(s): S. Kazemi, R. Cheng
Paper category: Symposium
Book title: RILEM-fib-AFGC International Symposium on Ultra-High Performance Fibre-Reinforced Concrete
Editor(s): F. Toutlemonde, J. Resplendino
Print ISBN: 978-2-35158-130-8
e-ISBN: 978-2-35158-131-5
Publisher: RILEM Publications S.A.R.L
Pages: 627 – 636
Total Pages: 10
Language: English

Abstract: 
In the conventional composite connection systems, the headed stud assembly was adopted to transfer the forces between the concrete and structural steel members. This paper describes research that investigated the use of an alternative mechanical connection system between the embedded steel plate and the ultra-high performance fibre-reinforced concrete (UHPFRC) beam for enhancing its pull-out response. The influence on the peak pull-out load carrying capacity and failure mechanism of the connections from the addition of 2 % volume-fraction
of short steel fibres was investigated. The results of experimental tests indicated that the peak pull-out load carrying capacity of the connections tends to significantly increase, as the fiber contents were increased from 0 % to 2 %. Instrumentation based on the 3-D digital image correlation (DIC) technique allowed for a detailed study of the variation of crack width during the test and its relation to the pull-out loading. A substantial improvement in the connection’s load-slip response and stiffness was found for specimens made of UHPFRC material with fibre over those without fibres.

Online publication: 2014
Publication Type: full_text
Public price (Euros): 0.00