My main field of interest is durability of concrete with regard to experiments and modeling. The modeling of concrete durability is dealt with adopting special continuum approaches. Example of such approach is the Hybrid Mixture Theory (HTM), which also include the electro quasi-static equations of Maxwell. These types of more advanced theories are essential, in this context, since multi-species ionic diffusion and water transport is central in understanding concrete durability. Special theories based on statistical mechanics are used to describe the important chemical parts of the problem. With help of existing theories together with constitutive modeling and experiments, advances are made within my research field. The postulate of entropy defined within thermodynamics takes a central rule in developing a multi-physical model of the kind described. For the numerical parts of the modeling transient formulations are developed using the Finite Element Method (FEM).