Hybrid fibre reinforced concrete – A state of the art review

Abstract

It is well established that concrete breaks easily when subjected to tensile loading. Randomly oriented short discrete fibres that stop or control the start, spread, or coalescence of fractures and enhance the mechanical characteristics of concrete. Concrete properties, including improved toughness and energy absorption, increased resistance to dynamic loads, and decreased fracture spacing and breadth, are significantly impacted by the addition of fibres to concrete. This article summarizes the research that has been done on the effective usage of various hybrid forms, such as cementitious composites made of steel, polymer, and natural fibres. Various hybrid system designs are examined according to the fibre type. In general, compared to mono-fibre reinforcement, fibres addition to concrete as hybrid forms enhances several of the material's technical qualities, including energy absorption capacity, ductility, toughness, and durability performance.

Keywords

• Hybridization
• Steel fibres
• Fibre-reinforced concrete
• Short fibres
• Long fibres