Multi-functional monodispersed SiO2-TiO2 core-shell nanostructure and TEOS in the consolidation of archaeological lime mortars surfaces

Abdelrhman Fahmy; Anna Gołąbiewska; Wiktoria Wojnicz; Alicja Stanisławska; Jakub Kowalski; Justyna Łuczak; Adriana Zaleska-Medynska; Salvador Bella Domínguez-; Javier Martínez-lópez; Eduardo Molina-piernas

doi:10.1016/j.jobe.2023.107809

Multi-functional monodispersed SiO2-TiO2 core-shell nanostructure and TEOS in the consolidation of archaeological lime mortars surfaces

Abstract

Archaeological traditional lime mortars are susceptible to many environmental conditions such as the impact of water (rain, humidity, groundwater, etc.), variation of temperatures' degrees, wind and/or pollution. Accordingly, this research aims to provide newly assessed multifunctional Nano-coating for the purpose of archaeological lime mortar protection. For this, the study combined physicochemical and mechanical characterizations in performance assessment of 3%, 5%, and 7% of the synthesized SiO2–TiO2 core-shell nanostructure and TEOS as consolidants on the surfaces of the experimental lime mortars. A series of techniques and tests were fulfilled for the evaluation. For analysis, X-ray diffraction and UV–Vis along with scanning electron microscopy were used to identify microstructure. Furthermore, wettability, colorimetric, self-cleaning, petrophysical, Nano-indentation, and uniaxial compressive strength tests were performed to select the most durable consolidant between 3%, 5%, and 7% SiO2–TiO2/TEOS. Durability assessments were carried out through salt weathering, thermal and UV aging tests. The results showed that 3% and 5% of SiO2–TiO2/TEOS enhanced the physical and mechanical properties of the lime mortars. On the other hand, 7% SiO2–TiO2/TEOS proved their insufficient efficacy in improving the surfaces of lime mortars for the high amount of TiO2 and its behavior for aggregation.

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Authors (10)

Abdelrhman Fahmy
Anna Gołąbiewska dr inż.
Wiktoria Wojnicz dr hab. inż.
Alicja Stanisławska dr inż.
Jakub Kowalski dr inż.
Justyna Łuczak dr hab. inż.
Adriana Zaleska-Medynska prof. dr hab. inż.
Salvador Bella Domínguez-
Javier Martínez-lópez
Eduardo Molina-piernas

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Category:

Articles

Type:

artykuły w czasopismach

Published in:

Journal of Building Engineering no. 79,
ISSN: 2352-7102

Language:

English

Publication year:

2023

Bibliographic description:

Fahmy A., Gołąbiewska A., Wojnicz W., Stanisławska A., Kowalski J., Łuczak J., Zaleska-Medynska A., Bella Domínguez- S., Martínez-López J., Molina-Piernas E.: Multi-functional monodispersed SiO2-TiO2 core-shell nanostructure and TEOS in the consolidation of archaeological lime mortars surfaces// Journal of Building Engineering -Vol. 79, (2023), s.107809-

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