Evaluation of Mechanical Performance of High Performance Hybrid Fiber Reinforced Concrete Containing Micro Silica

In the extended use of concrete in military applications, runway pavements and infrastructures, is subjected to heavy impact loads that vary both velocity intensity. The addition fibers high performance (HPC) can overcome its shortcomings such as brittleness, shrinkage less resistance also improve ductile behavior energy absorption capacity. this study, development on strengthening HPC using steel Polypropylene was focused. Moreover, an inclusion volume fractions polypropylene fibers, leads increase mechanical properties matrix. present study represents adding fibres at 0.5, 1.0, 1.5, 0.25, 1% by concrete, respectively. A mix has been designed achieve M60 grade mixes proportioned for FRC determine compressive strength, split tensile strength flexural hybrid fiber reinforced 28 days. experimental results showed with 1.5% improved 36% 25.1% single fibers. statistical tool formulated predict (i.e., compressive, strengths). response surface method (RSM) used analyze data develop a regression equation. RSM able experimentally tested values within acceptable range.