55. On the bending behaviour of SFRC exposed to high temperature

Title: 55. On the bending behaviour of SFRC exposed to high temperature
Author(s): M. Colombo, R. Felicetti, M. Manzoni, E. Bergamini
Paper category : conference
Book title: 6th International RILEM Symposium on Fibre Reinforced Concretes
Editor(s): M. di Prisco, R. Felicetti and G.A. Plizzari
Print-ISBN: 2-912143-51-9
e-ISBN: 2912143748
Publisher: RILEM Publications SARL
Publication year: 2004
Pages: 647 - 658
Total Pages: 12
Nb references: 12
Language: English

Abstract: Steel fibre reinforcement is being increasingly considered as a profitable alternative to the traditional welded steel mesh for secondary load bearing mechanisms, such as transversal bending of precast roof elements. The experimental investigation here presented is aimed to check the fire resistance of steel fibre reinforced concrete (SFRC) thin slabs. The application of fire recommendation (Eurocode 2 part 1.2 and UNI 9502) to SFRC requires the knowledge of the tensile strength decrease due to high temperature exposure. Scanty data are available in the literature, but useful information could be obtained in "residual" conditions, i.e. by testing the specimen at room temperature after a suitable thermal cycle. In this paper the influence of the testing conditions (hot vs. residual) on the tensile mechanical behaviour of the material is investigated. The accordance between these test modalities and the design proposal herein presented allow a reliable assessment of both the hot and the residual capacity of thin webbed SFRC members submitted to fire.

Online publication: 2004-08-30
Publication type : full_text
Public price (Euros): 0.00