Abstract
To investigate the effect of interface inclination on the tensile behavior of rock-concrete bi-material, quasi-static and dynamic splitting tests were conducted on rock-concrete discs. The angle between rock-concrete interface and loading direction ranges from 0° to 90°. The fracture development processes of rock-concrete bi-material disc specimens were monitored by a high-speed camera. Test results show that specimens under static and dynamic loading fail via three typical modes: interface fracture, tensile fracture, the mixture of tensile and interface fracture. The failure mode of specimen changes from interface fracture to tensile fracture as the interface inclination increases from 0° to 90°. The nominal tensile strength increases gradually with the increase of the interface inclination under both static or dynamic loading conditions. In dynamic tests, the dissipated energy increases gradually from 0° to 60° along with the increase in interface inclination. However, when the interface inclination exceeds 75°, the dissipated energy decreases to that at 45°. When the interface inclination further increases to 90°, the dissipated energy increases.
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