Ruiz Martinez, J., Rios, J., Perez Soriano, E., Cifuentes Bulte, H. and Leiva Fernández, C. 2025. The Impact of Steel Fiber Length and Dosage on Microstructure and Mechanical Performance in UHPFRC: A Hybrid Approach. Hormigón y Acero. (May 2025). DOI:https://doi.org/10.33586/hya.2025.4089.