ABSTRACT

In this work a numerical investigation is conducted in an attempt to clarify understanding of these behaviours. In order to achieve this and capture the complex behaviour of concrete under heating, the concrete is considered as a multi-phase, porous material and a hygro-thermal-mechanical (HTM) material description is adopted with strong coupling between the solid skeleton, liquid water and gas (water vapour and dry air) phases, in a detailed and fully generalised (3D) finite element implementation.