1. Associate Professor, School of Mining Engineering, Univ. of León, Avda./Campus de Vegazana s/n, 24071 León, Spain (corresponding author).
2. Senior Technical Officer, Dept. of Physical and Analytical Chemistry and Organic and Inorganic Chemistry, Univ. of Oviedo-CINN, 33006 Oviedo, Spain.
3. Associate Professor, School of Mining Engineering, Univ. of León, Avda./Campus de Vegazana s/n, 24071 León, Spain.
4. Tenured Scientific, Eduardo Torroja Institute for Construction Science (IETcc-CSIC), C/Serrano Galvache 4, 28033 Madrid, Spain.