1. Professor, Dept. of Construction Materials, Politechnical Univ. of Madrid, Cedex, Alfonso XII-3, Madrid 28014, Spain (corresponding author).
2. Professor, Dept. of Construction Materials, Politechnical Univ. of Madrid, Cedex, Alfonso XII-3, Madrid 28014, Spain.
3. Ph.D., Dept. of Construction Materials, Politechnical Univ. of Madrid, Cedex, Alfonso XII-3, Madrid 28014, Spain.
4. Associate Research Engineer, Dept. of Construction Materials, Politechnical Univ. of Madrid, Cedex, Alfonso XII-3, Madrid 28014, Spain.