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The research development of rockfill materials(RFM) was investigated by a series of large-scale triaxial tests.It is observed that confining pressure and particle breakage play important roles in the mechanical property,dilatancy relation and constitutive model of RFM.In addition,it is observed that the conventional dilatancy relation and constitutive model are not suitable for RFM due to the complex mechanical behavior.Hence,it needs to propose a unified constitutive model of RFM,considering the statedependent and particle breakage behavior.
The research development of rockfill materials (RFM) was investigated by a series of large-scale triaxial tests. It is observed that confining pressure and particle breakage play important roles in the mechanical property, dilatancy relation and constitutive model of RFM. Addition, it is observed that the conventional dilatancy relation and constitutive model are not suitable for RFM due to the complex mechanical behavior .ence, it needs to propose a unified constitutive model of RFM, considering the state dependent and particle breakage behavior.