Abstract
Fracture damage in loess poses a significant threat to the safety of loess-based infrastructure in the China Loess Region. To investigate the fracture damage behavior of loess, three-point bending tests were performed on semi-circular loess specimens containing cracks prefabricated at four angles relative to the loading direction. High-speed photography and acoustic emission monitoring were used to record the fracture damage process. Mechanical strength, crack evolution and acoustics emission signals were investigated in relation to prefabricated crack angles. Based on the results, a fracture damage mechanism for loess was obtained. This paper provides an in-depth understanding of the fracture damage behavior of loess, and a meaningful reference for the prevention and control of geo-crises caused by cracking.
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