TEXT Dr.-Ing. Andreas Ehrenberg, FEhS – Building Materials Institute, Duisburg/Germany
Dr. phil. Natalja Romero Sarcos, M.Sc. Daniel Hart, Dr.-Ing. Hansjörg Bornhöft, Prof. Dr.-Ing. habil. Joachim Deubener, Institute of Non-Metallic Materials, Clausthal University of Technology, Clausthal-Zellerfeld/Germany
