On mechanical behaviour of clastic soils: numerical simulations and constitutive modelling

Clastic soil is ubiquitous in practice but still poses a challenge for testing and modelling. Conventional laboratory tests with small sizes are not suitable the large grain size, while large-scale field often too costly time-consuming. In this paper, mechanical behaviour of clastic described by hypoplastic constitutive model based on numerical simulations considering both matrix breccia. The indicate that breccia content, gradation overconsolidation ratio have significant influence strength, deformation failure pattern soil. coarse particles found to change stress path developed consequently critical state matrix. Moreover, particle distribution computed tomography scanning seems larger impact than content soils.