Abstract
Concrete buildings are subjected to heavy/impact loads that vary in velocity and severity due to their extensive use in military applications and runways. The addition of fibers to concrete helps it overcome flaws such as limited durability, excessive shrinkage, and low impact resistance. The addition of fibers to high performance concrete (HPC) can enhance brittle behavior and energy absorption capacity, as well as solve drawbacks such as low durability, excessive shrinkage, and less resistance. The goal of this work was to produce HPC strengthening utilizing steel and polypropylene fiber. Furthermore, increasing the volume percentages of polypropylene and steel fibers increases concrete's Compressive Strength (CS), split tensile strength (STS) and Flexural Strength (FS) respectively. The experimental results showed that the use of hybrid fibers with 1% in HPC concrete has improved strength of the concrete when compared to high strength concrete (HSC) and single fibers with HPC.
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