1. Polytechnic School, Civil and Construction Engineering Department, University of São Paulo, São Paulo, Brazil
2. Department of Engineering, Civil Engineering Division, Pontificia Universidad Católica del Perú - PUCP, San Miguel, Peru
3. Polytechnic School, Mining and Petroleum Engineering Deptartment, University of São Paulo, São Paulo, Brazil
4. Polytechnic School, Metallurgical and Materials Engineering Deptartment, University of São Paulo, São Paulo, Brazil