Ultra-high-performance fibre-reinforced concrete

The durability of the fibres is paramount on the development of ultra-high-performance fibre-reinforced concrete (UHPFRC). These new composites represent the futnre of FRC and are treated in Section 15.5. 

Ultra-high-performance fibre-reinforced concrete (UHPFRC) and other new developments... 

Corinaldesi, V., Moriconi, G., 2012. Mechanical and thermal evaluation of ultra high performance fibre reinforced concretes for engineering applications. Construction and Building Materials, 26(1), pp. 289-294. 

Firas, S.A., Gilles, E, Robert, L.R., 2011. Bond between carbon fibre-reinforced polymer (CFRP) bars and ultra high performance fibre reinforced concrete (UHPFRC) Experimental study. Construction and Building Materials, 25(2), pp. 479-485. 

Kim, D.J., Park, S.H., Ryu, G.S., Koh, K.T., 2011. Comparative flexural behavior of hybrid ultra high performance fibre reinforced concrete with different macro fibres. Construction and Building Materials, 25, pp. 4144-4155. 

AFGC Recommendations, Ultra High Performance Fibre-Reinforced Concretes, Interim Recommendations, AFGC - Association Francaise de Genie Civil, Bagneux, France, 2002. 

K. Habel, Structural Behavior of Elements Combining Ultra-High Performance Fibre Reinforced Concretes (UHPFRC) and Reinforced Concrete , PhD Thesis, EPFL, Lausanne, 2004. 

C. Sujivorakul and A.E. Naaman, Ultra high-performance fiber-reinforced cement composites using hybridization of twisted steel and micro fibers , in M. Di Prisco, R. Felicetti, and G.A. Plizzari (eds) Fibre Reinforced Concrete - BEFIB 2004, Proc. RILEM Symp., PRO 39, RILEM Publications, Bagneux, France, 2004, pp. 1401-1410. 

The general conclusion is that while there are many well-established procedures to design ordinary concretes, which may be extended also to cover high performance concrete and ultra high performance concrete, there are no such methods for polymer modified concretes and for fibre-reinforced concretes. Also for fibres other than short steel ones (glass, polypropylene, long steel fibres, etc.) there are no general recommendations. 

The development of various kinds of high performance and ultra high performance concretes, also reinforced with dispersed fibres, has resulted in the creation of a group of very important building materials. At present, for many outstanding structures or for construction in special conditions, application of these materials is considered a necessity, and this situation will be extended in the future (Brandt 2008). 

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