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

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

Hybrid systems will continue to be the subject of future research on the development of ultra-high-performance fibre-reinforced concrete for many applications. However, two other research topics on FRC have emerged in recent years (1) utilization of waste fibres as reinforcement, and (2) development of fibre-reinforced alkali-activated binders (also known as geopolymers). 

The employment of waste fibres aims to contribute to the development of sustainable concretes. Indeed, the production of manufactured fibres (mainly synthetic ones) is responsible for an environmental impact that, at some extent, could be reduced if waste materials were used instead. The future of waste fibres as reinforcement for FRC is subjected to the maintenance of suitable properties and durability of those fibres under the high-alkaline environment of 

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