Modelling of heated concrete

摘要

This paper presents the basic principles and details of the physical, mathematical and numerical models forming the main structure of the numerical analysis of the thermal, hydral and mechanical behaviour of normal, high- performance and ultra-high performance concrete structures subjected to heating. A fully coupled non-linear formulation is designed to predict the potential for spalling, of heated concrete structures for fire and nuclear reactor applications. Concrete is considered as a multiphase material consisting of a solid phase, two gas phases and three water phases.