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Effectiveness assessment of Paraloid B-72 enhanced with Nano materials to improve of completion mortars properties for conservation of Seti I temple in el-Qurna, Thebes west bank, Egypt

2023; Springer Science+Business Media; Volume: 6; Issue: 3 Linguagem: Inglês

10.1007/s41939-023-00152-1

2520-8179

Essam H. Mohamed,

Concrete and Cement Materials Research

This paper presents an experimental study to assess the potential effectiveness of four consolidation treatments performed with: Nano silica (5%) dissolved in water, Nano lime (5%) dissolved in ethanol, Paraloid B72 (3%) dissolved in toluene enhanced with Nano silica (5%), and Paraloid B72 (3%) dissolved in toluene enhanced with Nano lime (5%) to improve the physical and mechanical properties of proposed completion mortars that will be used to compensation of the missing parts of the sandstone used in Seti I temple in el-Qurna, Thebes west bank, Egypt. The experimental samples were exposed to artificial ageing cycles [salt and (wet–dry) weathering]. Deteriorated sandstone samples were investigated by several scientific techniques such as; X-ray diffraction, polarized light microscope, scanning electron microscopy coupled with X-ray energy dispersive system. The consolidation effectiveness was determined through the evaluation of the physical properties (i.e. bulk density, water absorption, porosity). Durability of the consolidated mortar samples was determined by measuring their resistance to artificial ageing cycles, and the study of their side effects by scanning electron microscopy. Results of this study indicated that the mortar samples that were mixed by Paraloid B72 (3%) enhanced with Nano silica (5%) and Paraloid B72 (3%) enhanced with Nano lime (5%) achieved the best results to determine the appropriate mortar for the completion process.