Development of Low-Noise and Low-Emission Hybrid Fiber-Reinforced Rubberized Paving Concrete Mix

To address the dual concerns of environmental degradation and occupational health risks associated with emissions from traditional paving methods, this study investigates the use of Fiber-Reinforced Rubberized Concrete (FRRC) as a sustainable alternative for rigid pavement construction. A total of 238 concrete specimens incorporating recycled rubber and different types of fibers were tested to develop eco-friendly and durable pavement materials. Key performance metrics included ultrasonic pulse velocity (UPV) and abrasion resistance, with a focus on acoustic damping, long-term durability, and maintenance efficiency. The influence of repeated thermal cycling was also evaluated to replicate real-world service conditions. The results showed that the incorporation of rubber and fibers significantly improved both UPV and abrasion resistance. Furthermore, FRRC demonstrated better performance retention after thermal exposure compared to conventional concrete, highlighting its potential for use in green infrastructure. This approach promotes the recycling of waste materials and contributes to safer working environments by reducing harmful emissions on construction sites.