Bond between particles has become one of the key factors in establishing the constitutive model of natural sands. In this paper

the bonded granulates are idealized by two aluminum rods glued together by cement with cement water ratio 0.34

and the micromechanical responses of the bonded rods are investigated by performing a series of loading tests

such as tension tests

compression tests

shear tests

rotation tests and complex stress path tests. Then the comparison between the present results and the experimental data acquired on the epoxy resin adhesive by Jiang et al.

is carried out to analyze the effect of bonding materials. The results show that the mechanical behaviors of cement and epoxy resin bonded rods both satisfy the same micro-contact laws proposed by Jiang et al. in spite of some distinct differences between the two kinds of bond materials. The tension and compression strengths of cement are lower while the ductility is better than those of epoxy resin. Both cement and epoxy resin bonded rods present plastic-softening property in compression tests. In the shear and torsion tests

shearing force and torque initially increase with the normal force until a critical normal force is reached

and then gradually decrease. The strength envelope in the normal-torsion-shear space is a rugby and water-drop shell for the cement and epoxy resin adhesive

respectively.