A multiaxial constitutive model for concrete in the fire situation: Theoretical formulation.

Highlights: [•] A plastic–damage model for concrete at high temperature is proposed. [•] The unilateral effect is captured by a fourth-order damage tensor. [•] Transient creep strain is explicitly included in the model. [•] The model captures the main thermomechanical phenomena exhibited by concrete. [•] The implications of the coupling between plasticity and damage are discussed. [Copyright &y& Elsevier]