Study Correlation between Physical-Mineralogical Properties of Sandstone Used in Ptolemaic Temples in Upper Egypt and Its Weathering Resistance

This article focuses on study of a relation between physical-mineralogical properties sandstone used in Ptolemaic temples Upper Egypt and its resistance deterioration factors affecting it. In the present study, samples were collected from four sites; namely Dendera, Esna, Edfu Kom Ombo which are located Egypt. Polarized light microscope (PLM), Scanning Electron Microscope (SEM), X-Ray diffraction (XRD) energy-dispersive X-ray spectroscopy (EDX) to determine mineralogical properties, microstructure, chemical compositions deteriorated samples, addition physical tests; results confirmed that containing high percentage salts, clay minerals iron oxides have been significantly affected by factors. The treated paraloid B72 3% enhanced with Nano silica 5% improve stone. Results indicated consolidated Nanoparticles based acrylic Copolymers (Paraloid Nanocomposite silica) achieved best for improvement properties. is ultimate aim purpose conservation sustainability building materials temples.