1. Cardiff School of Engineering; Cardiff University; The Parade Cardiff CF24 3AA UK
2. Centro Universitario de la Defensa; Academia General Militar; 50090 Zaragoza Spain
3. LGCgE; Polytechnique Lille; Université des Sciences et Technologies de Lille; Avenue Paul Langevin 59655 Villeneuve-d'Ascq France
4. Institute for Construction and Building Materials; Technische Universität Darmstadt; Franziska-Braun-Str. 3 64287 Darmstadt Germany
5. Dipartimento di Ingegneria Civile e Ambientale; Politecnico di Milano; Piazza Leonardo da Vinci, 32 20133 Milano Italy