Mechanics of Ageing—From Building to Biological Materials

摘要: In this work, we present a general model for the analysis of concrete and biological tissues as multiphase porous materials, with particular regard to their ageing. Such problems are typically multiphysics ones overlapping domains where diffusion, advection, adsorption, phase changes, deformation, chemical reactions other phenomena take place in medium. For such complex system, here proposed is obtained from microscopic scale by applying Thermodynamically Constrained Averaging Theory (TCAT) which guarantees satisfaction second law thermodynamics all constituents both at micro- macrolevels. Moreover, one can obtain some important thermodynamic restrictions imposed on evolution equations describing material deterioration. Two specific forms adapted cases cementitious materials respectively shown. Some numerical simulations, aimed proving validity approach adopted, also presented discussed.