Abstract
A research project was carried out to evaluate the flexural creep behaviour of SFRC beams under sustained service loads and the crack propagation under high sustained loads. The evolution of the deflection, the crack width and the crack propagation were measured in service conditions (CMOD ws = 0.1 mm, load level P/Ps = 60 %) and ultimate conditions (wu = 0.5 mm, P/Pu = 60–90 %). The results allowed assessing the impact of the initial CMOD and sustained load levels on creep, crack propagation, damage evolution, and the mechanisms leading to the rupture of the beams. In service conditions, the results show that the deflection and crack opening of SFRC beams under sustained loading stabilises quickly toward an asymptote and that the compliance remains constant. In ultimate conditions, the results show that crack propagation governs the failure mechanisms of SFRC beams subjected to high sustained load levels. Moreover, it was observed that the beams failure occurs when the state of damage defined by the static behaviour envelope is attained.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsReferences
ACI Committee 544.: Design considerations for steel fiber reinforced concrete. In: ACI 544.4R-88, American Concrete Institute. ACI Farmington Hills (1996)
Barros J.: Fibre reinforced concrete: challenges and opportunities. In: Proceedings of the 8th International Symposium BEFIB. RILEM Publications, Bagneux, France (2012)
Reinhardt H.W., Naaman A.E.: High performance fibre reinforced cement composites (HPFRCC5). In: Proceedings of the International Conference of HPFRCC5. RILEM Publications, Bagneux, France (2007)
fib Bulletins 65–66.: Model Code 2010—Final Draft, vol. 1 and 2, pp. 720 (2012)
Zerbino, R.L., Barragán, B.E.: Long-term behavior of cracked steel fiber-reinforced concrete beams under sustained loading. ACI Mater. J. 109, 215–224 (2012)
Daviau-Desnoyers, D., et Charron, J.-P., Massicotte, B., Rossi, P., Tailhan, J.-L.: Characterization of the propagation of a macrocrack under sustained loading in steel fibre reinforced concrete. Mat. Struct. 49(3), 969–982 (2015)
CAN/CSA-A23.1-2.: Concrete: Constituents, Execution and Testing Methods. Canadian Standards Association, Mississaugo, Canada (2009)
CAN/CSA-S6-06.: Canadian Highway Bridge Design Code. Canadian Standards Association, Mississaugo, Canada (2013)
DeMontaignac, R., Massicotte, B., Charron, J.-P.: Design of SFRC structural elements: Flexural behavior prediction. Mat. Struct. 45(4), 623–636
Rossi, P.: Fissuration du béton: du matériau à la structure—application de la mécanique linéaire de la rupture. In: PhD Thesis ENPC, pp. 240. Paris
Hu, X., Wittmann, F.: Experimental method to determine extension of fracture-process zone. J. Mater. Civ. Eng. 2(1), 15–23 (1990)
Xu, S., Reinhardt, H.W.: Determination of double-K criterion for crack propagation in quasi-brittle fracture, part ii: analytical evaluating and practical measuring methods for three-point bending notched beams. Int. J. Fract. 98, 151–177 (1999)
Desnoyers, D.: Characterization and modelization of crack propagation in fiber reinforced concretes under constant loading. In: PhD Thesis of Polytechnique Montreal, pp. 323. Montreal, Canada, (In french) (2015)
Barragán, B.E., Zerbino, R.L.: Creep behaviour of cracked steel fibre reinforced concrete beams. In: Proceedings of the 7th International Symposium, BEFIB. RILEM Publications, Bagneux, France (2008)
Rossi, P., Boulay, C., Tailhan, J.-L., Martin, E., Daviau-Desnoyers, D.: Macrocrack propagation in a concrete specimen under sustained loading: study of the physical mechanisms. Cem. Concr. Res. 63, 98–104 (2014)
Walkinshaw, J.L.: Creep to Rupture Behavior of Concrete Beams. MSc Thesis of Massachusetts Institude of Technology, USA (1969)
Rossi, P., Tailhan, J.-L., Le Maou, F., Gaillet, F., Martin, E.: Basic creep behavior of concretes investigation of the physical mechanisms by using acoustic emission. Cem. Concr. Res. 42, 63–71 (2012)
Acknowledgments
This project has been financially supported by the Natural Sciences and Engineering Research Council (NSERC) of Canada, the Center for Research on Concrete Infrastructures of Quebec (FQRNT-CRIB). Materials were graciously provided by Bekaert, Holcim and Euclid. The authors gratefully acknowledge the technical staff of Polytechnique Montreal for its contribution in conducting the experimental program.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2017 RILEM
About this paper
Cite this paper
Daviau-Desnoyers, D., Charron, JP., Massicotte, B., Rossi, P., Tailhan, JL. (2017). Creep Behavior of a SFRC Under Service and Ultimate Bending Loads. In: Serna, P., Llano-Torre, A., Cavalaro, S. (eds) Creep Behaviour in Cracked Sections of Fibre Reinforced Concrete. RILEM Bookseries, vol 14. Springer, Dordrecht. https://doi.org/10.1007/978-94-024-1001-3_18
Download citation
DOI: https://doi.org/10.1007/978-94-024-1001-3_18
Published:
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-024-1000-6
Online ISBN: 978-94-024-1001-3
eBook Packages: EngineeringEngineering (R0)