Effect of steel fibre geometry on mechanical properties of SIFCON

• Main Authors: Abass, Eylaf Abdul Kareem, Mosheer, Khamail Abdul-Mahdi
• Format: Conference Proceeding
• Language: English
• Subjects: Compressive strength; Fiber reinforced concretes; Fiber reinforcement; Fiber volume fraction; Mechanical properties; Reinforced concrete; Reinforcing steels; Short fibers; Slurry infiltration; Splitting; Steel fibers; Stress-strain curves; Stress-strain relationships; Tensile strength
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0140823

The study’s aim is to clarify how different steel types impact the mechanical characteristics of SIFCON ("slurry infiltration fibre reinforced concrete"). Three sets of SIFCON specimens with a 7% fibre volume percentage were cast and examined. Micro steel fiber reinforcement is discussed in the first group, hook-end steel fiber reinforcement is discussed in the second group, and hybrid fiber reinforcement is discussed in the third group (3.5 per cent micro steel fibre and 3.5 per cent hook-end steel fibre). The research discovered that the geometry of fibres has "a significant influence on compressive strength", "splitting tensile strength", and the stress-strain curve because the network of fibres created and their density are dependent on the kind of fibres. Where the relevance of hook steel fibres much outweighs that of micro- end, actual findings show that mixing long and short fibres produces outstanding results as compared to standard concrete. When compared to conventional concrete, the strength of hook, hybrid (hook+micro), and micro steel fibre was enhanced by 134.21 percent, 123.68 percent, and 95.53 percent, respectively. The stress-strain curve data showed a similar trend. For 7 percent fibre content, the splitting tensile strength improved by 345.86 percent, 337.35 percent, and 276.122 percent for hook, hybrid (hook +micro), and micro steel fibre, respectively.