Cargando…
Study and Characterization of Special Gypsum-Based Pastes for Their Use as a Replacement Material in Architectural Restoration and Construction
Within the construction sector, the use of gypsum-based pastes features in the majority of monuments, giving this material significant relevance in conservation and restoration projects affecting the world’s cultural heritage. In this research, we evaluated special gypsum-based colored pastes mixed...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9457321/ https://www.ncbi.nlm.nih.gov/pubmed/36079258 http://dx.doi.org/10.3390/ma15175877 |
_version_ | 1784786026453008384 |
---|---|
author | Sáez-Pérez, María Paz Durán-Suárez, Jorge A. Verdú-Vázquez, Amparo Gil-López, Tomás |
author_facet | Sáez-Pérez, María Paz Durán-Suárez, Jorge A. Verdú-Vázquez, Amparo Gil-López, Tomás |
author_sort | Sáez-Pérez, María Paz |
collection | PubMed |
description | Within the construction sector, the use of gypsum-based pastes features in the majority of monuments, giving this material significant relevance in conservation and restoration projects affecting the world’s cultural heritage. In this research, we evaluated special gypsum-based colored pastes mixed with air lime, hydraulic lime and sodium silicate, and eight different pigments for their use as replacement materials in architectural restoration and construction. We analyzed the suitability of their physical and chemical properties and their hydric characteristics, mechanics and colorimetric implications in two different studies after 28 days and 120 days. The characterization of the products has mainly confirmed the suitability of the pastes containing pigments for use in the most common applications for these kinds of mixes, highlighting that their specific capacities are worth leveraging. The crystallization of gypsum minerals, observed in all of the mixes, helps to consolidate the shrinkage cracks which appear inside the pastes, improving their mechanical strength values. Another observation of the pastes is related to the amorphous silica precipitates in the mixes which contained sodium silicate: the latter provided to them good mechanical behavior. The improvement observed in the pastes containing the green earth pigment is substantial, due to the inclusion of aluminum silicates and Mg, which is partly responsible for the increased compressive strength of the pastes. Finally, the colorimetric analysis is of vital importance in determining the loss of intensity of the colors of the pastes used, since subjective observation leads to serious errors of interpretation. |
format | Online Article Text |
id | pubmed-9457321 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-94573212022-09-09 Study and Characterization of Special Gypsum-Based Pastes for Their Use as a Replacement Material in Architectural Restoration and Construction Sáez-Pérez, María Paz Durán-Suárez, Jorge A. Verdú-Vázquez, Amparo Gil-López, Tomás Materials (Basel) Article Within the construction sector, the use of gypsum-based pastes features in the majority of monuments, giving this material significant relevance in conservation and restoration projects affecting the world’s cultural heritage. In this research, we evaluated special gypsum-based colored pastes mixed with air lime, hydraulic lime and sodium silicate, and eight different pigments for their use as replacement materials in architectural restoration and construction. We analyzed the suitability of their physical and chemical properties and their hydric characteristics, mechanics and colorimetric implications in two different studies after 28 days and 120 days. The characterization of the products has mainly confirmed the suitability of the pastes containing pigments for use in the most common applications for these kinds of mixes, highlighting that their specific capacities are worth leveraging. The crystallization of gypsum minerals, observed in all of the mixes, helps to consolidate the shrinkage cracks which appear inside the pastes, improving their mechanical strength values. Another observation of the pastes is related to the amorphous silica precipitates in the mixes which contained sodium silicate: the latter provided to them good mechanical behavior. The improvement observed in the pastes containing the green earth pigment is substantial, due to the inclusion of aluminum silicates and Mg, which is partly responsible for the increased compressive strength of the pastes. Finally, the colorimetric analysis is of vital importance in determining the loss of intensity of the colors of the pastes used, since subjective observation leads to serious errors of interpretation. MDPI 2022-08-25 /pmc/articles/PMC9457321/ /pubmed/36079258 http://dx.doi.org/10.3390/ma15175877 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Sáez-Pérez, María Paz Durán-Suárez, Jorge A. Verdú-Vázquez, Amparo Gil-López, Tomás Study and Characterization of Special Gypsum-Based Pastes for Their Use as a Replacement Material in Architectural Restoration and Construction |
title | Study and Characterization of Special Gypsum-Based Pastes for Their Use as a Replacement Material in Architectural Restoration and Construction |
title_full | Study and Characterization of Special Gypsum-Based Pastes for Their Use as a Replacement Material in Architectural Restoration and Construction |
title_fullStr | Study and Characterization of Special Gypsum-Based Pastes for Their Use as a Replacement Material in Architectural Restoration and Construction |
title_full_unstemmed | Study and Characterization of Special Gypsum-Based Pastes for Their Use as a Replacement Material in Architectural Restoration and Construction |
title_short | Study and Characterization of Special Gypsum-Based Pastes for Their Use as a Replacement Material in Architectural Restoration and Construction |
title_sort | study and characterization of special gypsum-based pastes for their use as a replacement material in architectural restoration and construction |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9457321/ https://www.ncbi.nlm.nih.gov/pubmed/36079258 http://dx.doi.org/10.3390/ma15175877 |
work_keys_str_mv | AT saezperezmariapaz studyandcharacterizationofspecialgypsumbasedpastesfortheiruseasareplacementmaterialinarchitecturalrestorationandconstruction AT duransuarezjorgea studyandcharacterizationofspecialgypsumbasedpastesfortheiruseasareplacementmaterialinarchitecturalrestorationandconstruction AT verduvazquezamparo studyandcharacterizationofspecialgypsumbasedpastesfortheiruseasareplacementmaterialinarchitecturalrestorationandconstruction AT gillopeztomas studyandcharacterizationofspecialgypsumbasedpastesfortheiruseasareplacementmaterialinarchitecturalrestorationandconstruction |