Abstract
Confinement and tension stiffening effects were studied on self-consolidating, hybrid fiber reinforced concrete (SC-HyFRC) composites and compared to plain self consolidated concrete (SCC) specimens without fibers. The SC-HyFRC composites consist of both steel macrofibers and PVA microfibers with a total fiber volume fraction of 0.015. Cylindrical specimens were confined by continuous steel spirals with transverse reinforcement ratios ranging from 0.32%-1.91% and tested in uniaxial compression. The SC-HyFRC composites despite 2-3 times smaller transverse reinforcing ratios exhibit similar ductility and softening behavior compared to the plain SCC specimens. The effect of SC-HyFRC composites on tension stiffening behavior was investigated using axially reinforced dogbone specimens. The reinforced SC-HyFRC revealed tension stiffening and carried tension to strains far exceeding the yield strain of the reinforcing steel.
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Trono, W., Jen, G., Moreno, D., Billington, S., Ostertag, C.P. (2012). Confinement and Tension Stiffening Effects in High Performance Self-consolidated Hybrid Fiber Reinforced Concrete Composites. In: Parra-Montesinos, G.J., Reinhardt, H.W., Naaman, A.E. (eds) High Performance Fiber Reinforced Cement Composites 6. RILEM State of the Art Reports, vol 2. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-2436-5_31
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DOI: https://doi.org/10.1007/978-94-007-2436-5_31
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-007-2435-8
Online ISBN: 978-94-007-2436-5
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