The properties of fibre-reinforced calcium phosphate cement composites under prolonged increasing cyclic thermal loads

Abstract

This work is focused on thermo-mechanical behaviour of fibre-reinforced calcium phosphate cement (CPC) under thermal load. Macro-polypropylene, amorphous metallic and recycled carbon fibres at a dosage of 1.5% by volume were individually incorporated into a molten premixed plain CPC to improve its fracture behaviour. The tested specimens with dimensions 40x40x160 mm3 were first autogenously cured at room temperature for 14 days before being exposed to a temperature of 50 °C-1000 °C in an oven. The thermal resistance of the cement composites was then investigated. The residual properties observed in non-destructive and destructive experiments showed that the strength of CPC composite material is affected by extreme heat. Nevertheless, this material holds great potential for refractory applications.