Hybrid basalt fiber aerodrome concrete performance evaluation

Concrete airport pavements are subjected to severe mechanical and environmental demands, necessitating improved crack resistance, fatigue performance, and durability. The object of research is macro-micro hybrid basalt fiber reinforced concrete (BFRC) as a potential high-performance pavement material. The work aims to evaluate the influence of basalt fiber dosage and hybridization on crack width and depth, fracture toughness, fatigue life, chloride ingress resistance, and structural reliability. Method. Mechanical properties from laboratory tests were integrated with semi-empirical fracture mechanics models, S-N fatigue relationships, Fick’s second-law chloride diffusion analysis, and reliability-based statistical assessment. Results. Results indicate that increasing fiber content reduced predicted crack width and depth, while hybrid systems significantly enhanced fracture parameters. The 1.5A0.5B mix exhibited the highest fracture toughness and durability performance, whereas the 2A1B mix demonstrated superior fatigue life and reliability index. Overall, balanced hybrid basalt fiber systems provided synergistic improvements in cracking resistance, fracture behavior, fatigue performance, and long-term durability for airport pavement applications.