$Effect of fibre aspect ratio and fibre volume fraction on the effective fracture energy of ultra-high-performance fibre-reinforced concrete$

Radoslav Sovják, Petr Máca, Tomáš Imlauf

Effect of fibre aspect ratio and fibre volume fraction on the effective fracture energy of ultra-high-performance fibre-reinforced concrete

Číslo: 4/2016
Periodikum: Acta Polytechnica
DOI: 10.14311/AP.2016.56.0319

Klíčová slova: effective fracture energy; UHPFRC; straight steel micro-fibres; fibre volume fraction; fibre aspect ratio; simplified predictive model, Účinná energie zlomeniny; UHPFRC; Rovná ocelová mikrovlákna; Objemová frakce vláken; Poměr stran vlákna; Zjednodušený prediktivní model

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Anotace: This paper investigates the effective fracture energy of UHPFRC with various fibre volume fractions and various fibre aspect ratios. We have concluded that the effective fracture energy is dependent on both the fibre volume fraction and the fibre aspect ratio. In addition, we have found that both dependencies follow a linear trend.