Fig. 6. SEM micrographs of GMWM mortar. The areas marked as F and
G are identified as some type of aluminosilicate with the following composition:
X [(CaO/SiO2=0); (Al2O3/Na2Oeq= 2.5) and SiO2/Al2O3=4); Y[(CaO/
SiO2=0); (Al2O3/Na2Oeq=3.1) and SiO2/Al2O3=3.1). The area marked as Z
is identified as some form of calcium silicate with some sodium and with traces
of aluminium in its composition (CaO/SiO2=0.8); (Al2O3/Na2Oeq=0.3) and
SiO2/Al2O3=20.2)