Abstract
In order to clarify the effect of structural bonding on shearing property of the bonded granular materials, a series of tests was carried out. The splitting strength and unconfined compression strength of the bonded materials were examined and used as the index representing a degree of bonding. Isotropic compression test in which maximum stress of 40MPa was applied and triaxial compression test under a wide range of confining pressures were performed on both bonded and non-bonded materials. For the bonded materials the bonding had hardly any effect on the residual stress state in spite that the peak strength markedly increased with increasing cement content. The extra shearing resistance from the residual stress state increased with increasing strain increment ratio at peak. For the bonded materials the dilatancy component of shearing resistance seemed to result from overriding of the particle agglomerate. The strain increment ratio at peak was assessed using the splitting strength as well as the unconfined compression strength. The dilatancy component for the bonded materials markedly decreased as confining pressure increases.
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