Mechanical performance of ultra-high-performance fiber reinforced concrete (UHPFRC) incorporating slag-based admixtures

This paper investigates the mechanical performance of ternary blended ultra-high-performance fiber-reinforced concrete (UHPFRC) developed by using alccofine powder (AF) and ground-granulated blast furnace slag (GGBS). Crimped steel fibers of dimensions 35 mm length and 0.5 mm diameter are used as fiber reinforcement, ranging from 0 to 2% with an increment of 0.5%. A total of six UHPFRC mixtures were prepared and tested for their mechanical performance. The test results indicated that UHPFRC mixture with 2% steel fibers by volume displayed maximum performance values of 153.57, 35.83, and 17.07 Mpa for compressive, flexural, and split-tensile strengths at 28 days.