Behavior of Ultra-High-Performance Concrete with Hybrid Synthetic Fiber Waste Exposed to Elevated Temperatures

The reinforcement of ultra-high-performance concrete (UHPC) with fibers was investigated in this study. Concrete is the most widely used manmade construction material, and UHPC has remarkable mechanical properties. properties can be modified by a variety curing procedures amount cement used. This study aimed to examine impact fiber reinforcement, temperature, exposure time on UHPC. Initially, temperature for changed from 300 °C 500 set 1 2 h. Various combinations ultrasonic pulse, thermal conductivity, compressive strength, flexural splitting, modulus elasticity, drop hammer (impact resistance, energy, ductility index) were after 91 days steam curing. For curing, kept at 90 three days. characteristics primary focus research. test results showed that accelerated regime achieved maximum strength 102.6 MPa specimens without 124.7 fibers, which represents 22% increase strength. When compared all qualities improved, especially when subjected high temperatures. incorporation hybrid synthetic waste key aspect developing new ultra-high-strength features.