Punching shear resistance of UHPFRC slabs: experimental works and design model

Author(s): L. Moreillon, R. Suter, R. Le Roy
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: 577 – 586
Total Pages: 10
Language: English

Abstract: 
For members and flat slabs without shear reinforcement, the shear and punching shear strength are often the determining design criteria. These failure modes are characterized by a brittle behaviour with possible partial or total collapse of the structure. The ability of Steel Fibre Reinforced Concrete (SFRC) to reduce shear reinforcement of reinforced concrete members and slabs or even to eliminate it, is supported by several experimental studies. However its practical application remains marginal mainly due to the lack of standards, procedures and rules adapted to its performance. In comparison with conventional SFRC, the high tensile strength and toughness of UHPFRC allow the structural elements to achieve a significantly higher resistance and deformation capacity. This paper presents several results of an original experimental campaign carried out at the HES-SO, Fribourg, on UHPFRC slabs with and without conventional steel reinforcement. On the basis of the test results, the authors propose harmonized models for the punching shear strength of UHPFRC structures.

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