1. Postdoctoral Researcher, ISISE, Dept. of Civil Engineering, Univ. of Minho, Azurém, 4800-058 Guimarães, Portugal (corresponding author).
2. Professor, ISISE, Dept. of Civil Engineering, Univ. of Minho, Azurém, 4800-058 Guimarães, Portugal.
3. Associate Professor, ISISE, Dept. of Civil Engineering, Univ. of Minho, Azurém, 4800-058 Guimarães, Portugal.