Bending Toughness and Toughening Mechanism of Polyoxymethylene Fiber-Reinforced Shotcrete. - Li, Shujian; You, Jun; Wang, Menglai; Kong, Xiangyun; Wang, Guangjin; Zhu, Yuanting; Sang, Chen; Xia, Xiaochuan (Materials (1996-1944), 2026)