Impact resistance of macro and micro steel fibre reinforced self-compacted concrete (SFRSCC) with modelling and reliability analysis

• Published in: Discover applied sciences 2024-01, Vol.6 (1), p.17, Article 17
• Main Authors: Kesavamoorthi, R., Ganesh, G. Mohan
• Format: Article
• Language: English
• Subjects: Absorption; Admixtures; Cement; Concrete mixes; Concrete mixing; Distribution functions; Ductile-brittle transition; Energy absorption; Fiber reinforced concretes; Fibers; Fractions; Impact resistance; Impact strength; Impact tests; Mechanical properties; Reinforced concrete; Reinforcing steels; Reliability analysis; Response surface methodology; Self-compacting concrete; Steel; Steel fibers; Surface chemistry; Tensile strength; Weibull distribution; Workability
• ISSN: 3004-9261; 2523-3963; 3004-9261; 2523-3971
• DOI: 10.1007/s42452-024-05668-w

Adding steel fibres can transform the brittle characteristic of concrete into a ductile state. The objective of the current study is to test the impact resistance of macro and micro steel fibre-reinforced self-compacting concrete (SFRSCC) experimentally by applying a simulated drop-weight impact, as well as statistically and through reliability studies. Cube specimens were used for the experiment. The inclusion of macro and micro steel fibre greatly increased the concrete mixture’s impact resistance. It is observed that the volume fraction of 0.75 and 0.50% of macro and micro steel fibre has improved impact resistance with an increase in the percentage of energy absorption of 216.21 and 240.53%, respectively. All the concrete samples exhibited the same failure pattern. Using Response Surface Methodology, the impact resistance of SFRSCC mixtures can be accurately predicted. The first and failure cracks (N1 and N2) follow a two-parameter Weibull distribution function of drop-weight impact test.