Constitutive model for stress–Strain responses of municipal solid waste considering fibrous reinforcement

The triaxial test results of municipal solid waste (MSW) with different fibrous content show that reinforcement materials is the key factor affecting mechanical properties MSW. Thus, MSW regarded as a composite (plastic +textiles) and paste (i.e., any other non-fibrous materials). Under load, its behavior determined by two listed previously. This study introduces notion fibrous-reinforced parameters provides corresponding evaluation equation. A new plastic potential function reflecting effect developed to establish elastoplastic constitutive model for predicting stress–strain responses Comparing anticipated experimental findings various demonstrates suggested model’s predictions are in good accordance data. reproduces essential aspects upward curving curves continuous volumetric strain increase axial more precisely during loading, particularly curve form at higher level. Meanwhile, also able capture characterization larger strains specimens lower confining stress. measured data parameter analysis reveals can accurately mimic deformation MSW, hence providing theoretical foundation landfill project.