Experimental Investigating the Effect of Glass Fibre on Mode I, Mode II, and Mixed Mode (I-II) Fracture Toughness and Crack Propagation in Fibre-Reinforced Concrete

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Hatami Jorbat Mitra; Hosseini Mehdi; Mahdikhani Mahdi

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Journal Paper

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Journal: ENGINEERING GEOLOGY Year:2022 | Volume:14 | Issue:4 Page(s): 39-58

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Information Journal Paper

Title

Experimental Investigating the Effect of Glass Fibre on Mode I, Mode II, and Mixed Mode (I-II) Fracture Toughness and Crack Propagation in Fibre-Reinforced Concrete

Author(s)

Hatami Jorbat Mitra | Hosseini Mehdi | Mahdikhani Mahdi | Issue Writer Certificate

Keywords

Crack propagation

fiber-reinforced concrete

mode I fracture toughness

mode II fracture toughness

mixed mode (I-II) fracture toughness

Abstract

Concrete is the most widely-used material in civil engineering and often contains the cheapest and most common matter. It can therefore cause irreparable damages due to cracks and fractures. The creation of fibre-reinforced concrete in recent years has largely rectified the aforementioned shortcomings. This study uses the direct crack Brazilian disk test to evaluate fracture toughness and Crack propagation in fibre-free and glass fibre concrete samples in 0.2, 0.35 and 0.5 volume percentages. Moreover, fracture toughness and Crack propagation from pre-existing cracks were calculated for samples in mode I, mode II, and mixed mode (I-II). The samples were subjected to the Brazilian disk test at 0, 15, 28.83, 45, 60, 75 and 90-degree angles relative to the pre-existing crack’s trajectory. Laboratory investigations showed that the wing crack at sub 75-degree (0

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