Numerical model of heterogeneous concrete in 3D for finite element analysis of transport- and mechanical problems, and computational homogenization.
The model has been published here:
https://dx.doi.org/10.1007/s00466-014-0998-0
https://dx.doi.org/10.1007/s00466-014-1105-2
Please cite either of the two published papers if you use the model as a means for your own work.