Fly ash-based Reactive Powder Concrete with coarse aggregate and GGBFS: Mechanical properties and sustainabilityWuyang Han, Waschak Thongsri, Natthapong Nima, Nantawat Khomwan and Krit ChaimoonE3S Web Conf., 712 (2026) 09005DOI: https://doi.org/10.1051/e3sconf/202671209005