International Journal of Science, Engineering and TechnologyAuthors: Assistant Professor Ms. Sheela Malik, Navreen
Abstract: Steel Fiber-reinforced concrete has gained significance owing to its enhanced mechanical qualities and fracture resistance. This research examines the optimisation of steel fibre parameters—namely aspect ratio, volume fraction, and distribution—to improve concrete performance at ambient and increased temperatures. The study assesses the impact of these characteristics on compressive strength, flexural toughness, and thermal stability by experimental testing and computational modelling. The research seeks to determine ideal fibre arrangements that enhance structural strength and reduce thermal deterioration. The findings will provide critical insights for the design of high-performance Fiber-reinforced concrete (FRC) appropriate for various climatic circumstances, ranging from conventional construction to fire-sensitive applications. At high temperatures, steel Fiber-reinforced concrete (SFRC) encounters issues including diminished bond strength and heightened spalling susceptibility. This research investigates the thermal behaviour of SFRC by exposing samples to regulated heating cycles and assessing residual mechanical characteristics. Critical characteristics, such as fibre shape and dose, are examined to assess their influence on post-fire performance. The study further investigates hybrid fibre combinations to enhance heat resistance and ductility. This study enhances the creation of more robust concrete structures by discovering ideal fibre characteristics, enabling them to endure high temperature exposure without substantial loss of load-bearing capability. This finding has practical significance for infrastructure projects that need robust and fire-resistant materials. The research seeks to improve concrete's mechanical performance at various temperatures by the optimisation of steel fibre reinforcement, hence assuring long-term structural integrity. The results will assist engineers in choosing suitable fibre kinds and doses for certain purposes, ranging from high-rise structures to industrial facilities. This research enhances the comprehension of SFRC behaviour under thermal stress, facilitating the development of more resilient and sustainable building solutions in both standard and elevated temperature conditions.
