1. Ph.D. Candidate, Dept. of Construction Engineering, Technical Univ. of Catalonia, 1-3 Jordi Girona, 08034 Barcelona, Spain (corresponding author).
2. Vice-Rector, Universitat Internacional de Catalunya, 22 Immaculada, 08017 Barcelona, Spain.
3. Professor, Dept. of Construction Engineering, Technical Univ. of Catalonia, 1-3 Jordi Girona, 08034 Barcelona, Spain.