THE MUTUAL INFLUENCE BETWEEN EDGE CRACKS ON SEMI-CIRCULAR BENDING SPECIMENS AND MORTAR MORTAR INTERFACE(DIFFERENT INCLINATION ANGLES)
This article investigates the influence of the interaction between edge cracks(notches)and the mortar mortar interface on the mechanical properties of semi-circular bending(SCB)specimens.In the experiment,SCB specimens with different mortar mortar interface angles and different joint lengths were measured.Under a force rate of 0.004 mm/min,SCB samples with a diameter of 10 cm and edge cracks of different lengths were prepared and tested in the laboratory.The interfacial tensile strength was 0.15 MPa,and the joint tensile fracture toughness was 0.28 MPa √ m.These experiments indicate that the length of cracks(notches)and interface angle(related to loading direction)largely determine the failure and fracture process of SCB specimens.At the same time,the particle folding code(particle flow code)in PFC2D was used to simulate the SCB samples tested in the experiment.
NETL
NSTL
万方数据
