In order to investigate the shear yield characteristics of structured granite residual soil

a series of conventional triaxial drained tests are conducted on the undisturbed granite residual soil

remolded soil and cemented residual soil. From the test results

some insights can be obtained as follows. For undisturbed granite residual soil and cemented residual soil

the bond yield point during shearing could be identified on the curve of the normalized tangential stiffness versus axial strain in log-log scale. The consolidation pressure has a significant influence on the shear yield characteristics of undisturbed granite residual soil and cemented residual soil during shearing; the bonds inside structured soil tend to be damaged relatively more seriously as is higher; accordingly the initial normalized stiffness will be smaller at the beginning of the shearing process; and the axial strain at the bond yield point will also be smaller. Besides

it can be concluded that once excesses a critical value

the bonds inside soil will be damaged totally; in this case

there will be no bond yield occurring during shearing; and the curves will be coincided with the ones of remolded soil. For remolded soil

no bond yielding is observed during shearing

the curve is nearly constant with no dependence of the value of .