1. Ph.D. Candidate, Laboratory of Building Construction and Building Physics, Dept. of Civil Engineering, Aristotle Univ. of Thessaloniki, 54124 Thessaloniki, Greece (corresponding author).
2. Assistant Professor, Institute of Structural Analysis and Antiseismic Research, School of Civil Engineering, National Technical Univ. of Athens, 15780 Athens, Greece.
3. Professor Emeritus, Laboratory of Building Construction and Building Physics, Dept. of Civil Engineering, Aristotle Univ. of Thessaloniki, 54124 Thessaloniki, Greece.