Fig. 12From: Sustainability problems of the Giza pyramidsa SEM micrographs of structural mortars joining the backing stone blocks of Cheops pyramid. Amorphous silica are participated on the limestone surfaces. b EDX spectrum and micro analysis of the previous image of the structural mortars grains joining the backing stone blocks of Cheops pyramid. A strong Calcium, sulphur and silica signals are observed. c SEM micrographs of structural mortars joining the backing stone blocks of Cheops pyramid. The micrographs show the characterization of the building material structures, contaminant analysis on and within building materials. The open pits and pore holes due to extensive weathering is obviousBack to article page