Fiber-reinforced concrete with recycled high-alumina refractory aggregates: Mechanical performance after exposure to elevated temperatures

Key Points

• Mechanical performance improved in fiber-reinforced concrete exposed to elevated temperatures, enhancing durability.
• Key evidence includes a significant increase in compressive strength at 600°C, showing resilience to thermal stress.
• Analysis of concrete samples revealed that high-alumina aggregates positively impact performance post-thermal exposure.
• Support for using recycled aggregates in construction highlights sustainability and cost-effectiveness of fiber-reinforced concrete.