1. Postdoctorate Researcher, Concrete Institute, Dept. of Continuum Mechanics and Structures, Escuela Técnica Superior de Ingenieros de Caminos, Canales y Puertos, Polytechnic Univ. of Madrid, 28040 Madrid, Spain (corresponding author).
2. Ph.D. Candidate, Concrete Institute, Dept. of Continuum Mechanics and Structures, Escuela Técnica Superior de Ingenieros de Caminos, Canales y Puertos, Polytechnic Univ. of Madrid, 28040 Madrid, Spain.
3. Associate Professor, Concrete Institute, Dept. of Continuum Mechanics and Structures, Escuela Técnica Superior de Ingenieros de Caminos, Canales y Puertos, Polytechnic Univ. of Madrid, 28040 Madrid, Spain.
4. Professor, Concrete Institute, Dept. of Continuum Mechanics and Structures, Escuela Técnica Superior de Ingenieros de Caminos, Canales y Puertos, Polytechnic Univ. of Madrid, 28040 Madrid, Spain.