The paper presents an overview of a finite element approach for the analysis of the Concrack benchmark RL1. The approach adopted includes a thermo-hygro component which is coupled to a mechanical model which includes non-linear mechanical, aging, shrinkage and long…
The paper presents an overview of a finite element approach for the analysis of the Concrack benchmark RL1. The approach adopted includes a thermo-hygro component which is coupled to a mechanical model which includes non-linear mechanical, aging, shrinkage and long term creep behaviour. The thermo-hygro model solves the mass balance equations for water vapour and liquid water as well as the enthalpy balance equation. A particular focus of the paper is on the model used to describe the development porosity with hydration. It is concluded that a correct treatment of porosity development over time is essential for the proper simulation of the Concrack material data and benchmarks.