Fig. 14
a SEM micrographs of structural mortars joining the backing stone blocks of Chephren pyramid. Observation of minute and deep cracks in the mortar structure and salt crystallization into mortars. b EDX spectrum and micro analysis of the previous image of the structural mortars grains joining the backing stone blocks of Chephren pyramid. A strong Calcium and silica signals are observed. c SEM micrographs of structural mortars joining the backing stone blocks of Chephren pyramid. The open pits and pore holes due to extensive weathering is obvious