1. Professor, Civil Engineering Laboratory, State Univ. of the Northern Rio de Janeiro, Av. Alberto Lamego, 2000, Campos dos Goytacazes, Rio de Janeiro 28013-602, Brazil.
2. Professor, Civil Engineering Laboratory, State Univ. of the Northern Rio de Janeiro, Av. Alberto Lamego, 2000, Campos dos Goytacazes, Rio de Janeiro 28013-602, Brazil (corresponding author).
3. Professor, Engineering and Materials Science, Military Engineering Institute, Praça Gen. Tibúrcio, No. 80, Urca, Rio de Janeiro, Rio de Janeiro 28013-602, Brazil.
4. Professor, Dept. of Civil Engineering, Federal Univ. of Viçosa, Av. P.H. Rolfs, Viçosa, Minas Gerais 36570-000, Brazil.