Visualization of failure in a pull-out test of cable bolts using X-ray CT

Abstract The patterns of failure in a pull-out test are visualized by an X-ray CT scanner to supply the basic data on the bond failure of rock bolts and cable bolts. In the pull-out test, a comparison was made between two types of cable bolts and rock bolts. From the results, it is shown that the microscopic failure mechanism is classified as the different failure mode. Then the supporting effect of rock bolts and cable bolts are discussed.