DURABILITY OF AN ULTRA-HIGH FIBRE REINFORCED CEMENT COMPOSITE UNDER A SERVICE STATE LOADING AND IN AN AGGRESSIVE ENVIRONMENT
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Published:2005
P Rossi, E Parant, 2005. "DURABILITY OF AN ULTRA-HIGH FIBRE REINFORCED CEMENT COMPOSITE UNDER A SERVICE STATE LOADING AND IN AN AGGRESSIVE ENVIRONMENT", Cement Combinations for Durable Concrete: Proceedings of the International Conference held at the University of Dundee, Scotland, UK on 5–7 July 2005, Ravindra K. Dhir, Thomas A. Harrison, Moray D. Newlands
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The LCPC has developed and patented a new ultra high performance fibre reinforced cement composite (UHPFRCC) based on a multiscale fibre reinforcement concept. An innovative test of durability is presented. Pre-cracked thin slabs are damaged by fatigue then maintained under bending at the same level. A part of these slabs undergoes 30 weekly wetting-drying cycles in a chloride solution (NaCl 5%, 20°C). A reloading to failure is then subsequently carried out. One notes an absence of corrosion in the micro-cracked area even for cover lower than 300 microns and a strength increase for pre-damaged slabs by fatigue. Under service load and in the presence of chloride water, a quasi-total recovery of initial stiffness is possible; it is accompanied by an increase of the pseudo-elastic behavior. Self-healing of the material can explain this result.
INTRODUCTION
CREEP UNDER BENDING OF THE MSFRCC IN A MARINE ENVIRONMENT
EXPERIMENTAL RESULTS
CONCLUSIONS
REFERENCES
