Investigating the Fracture Process and Tensile Mechanical Behaviours of Brittle Materials under Concentrated and Distributed Boundary Conditions

In this study, concrete was selected to investigate the real-time splitting tensile mechanical and fracture behaviours of brittle materials using Brazilian test under concentrated distributed boundary conditions. The digital image correlation (DIC) method adopted evaluate strength failure process in tests a high-resolution camera. DIC results showed that position crack initiation randomly occurred at centre disc with loads (BTC). Comparatively, initiated discs most (BTD), as validated by results. Our indicated average nominal specimens cracking larger than BTC, suggesting measured related discs. Moreover, study demonstrated dependent on equation recommended ISRM (International Society for Rock Mechanics) might slightly overestimate based pure elastic theory hyperbolic-distributed loading conditions boundaries.