1. Ph.D. Candidate, ISISE, Dept. of Civil Engineering, Univ. of Minho, Azurém, 4800-058 Guimarães, Portugal; Lecturer, Dept. of Civil Engineering, Univ. of Phayao, Phayao 56000, Thailand (corresponding author).
2. Full Prof., ISISE, Dept. of Civil Engineering, Univ. of Minho, Azurém, 4800-058 Guimarães, Portugal.
3. Ph.D. Civil Eng., CiviTest, Parque Industrial de Jesufrei, Rua da Indústria, n.°144, 4770-160 Vila Nova de Famalicão, Portugal.