Abstract Summary
Modelling the constitutive relations of chemically corroded carbonate rocks is essential for the design and stability evaluation of engineering constructions in karst areas. This study presents a sequentially coupled chemical mechanical damage constitutive model for carbonate rock, based on the Arrhenius theory, Lemaitre's strain equivalent principle and the statistical approach. A modified Mohr-Coulomb criterion with mobilized friction angle and cohesion is introduced to capture the nonlinear relationship between the compressive strength and confining stresses. Finally, the proposed model is validated and shows agreement with experimental data. Keywords: Damage model; Chemical mechanical coupled condition; Modified Mohr-Coulomb criterion
