1. Civil Engineering School, Univ. of Castilla-La Mancha, Avda. Camilo José Cela s/n, 13071 Ciudad Real, Spain (corresponding author).
2. Professor, Center for Advanced Cement-Based Materials, Northwestern Univ., 2145 Sheridan Rd., Evanston, IL 60208.
3. Owens Corning, 767 Quai des Allobroges, 73009 Chambéry Cedex, France.
4. Professor, Dept. of Construction Engineering, Universitat Politècnica de Catalunya BarcelonaTech, c/ Jordi Girona 1-3, Edif C1, 08034 Barcelona, Spain.