Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental Evaluation of Salt Crystallization Induced Alterations in Granite Characteristics
Concerning the preservation of built cultural heritage, historical masonry buildings have reached a critical level of deterioration because of their age, which consequently makes their resistance against salt decay problematic. The present study aims to describe the influence of salt crystallization on granite stone materials, a prevalent material in historic masonry in Northern Portugal. The paper aimed to understand the material’s susceptibility to sodium chloride (NaCl) induced damage. A series of nondestructive and destructive experiments (such as ultrasonic pulse velocity measurements and uniaxial compression strength tests) were conducted on granite stone to evaluate its properties in response to the salt crystallization phenomenon. The internal structure and integrity of granite samples were evaluated before and after exposure to salt crystallization cyclic tests. For the wetting/drying cycles, the environmental conditions (temperature and relative humidity) were chosen based on realistic settings, with an emphasis on avoiding the use of severe circumstances. The ultrasonic wave propagation measurements showed indirect indicators of microstructural alterations. The changes in compressive strength aligned with the findings from the other test programs. The combined results of the experimental campaign contribute to a better understanding of how salt crystallization might influence the physical and mechanical characteristics of granite masonry.
Experimental Evaluation of Salt Crystallization Induced Alterations in Granite Characteristics
Concerning the preservation of built cultural heritage, historical masonry buildings have reached a critical level of deterioration because of their age, which consequently makes their resistance against salt decay problematic. The present study aims to describe the influence of salt crystallization on granite stone materials, a prevalent material in historic masonry in Northern Portugal. The paper aimed to understand the material’s susceptibility to sodium chloride (NaCl) induced damage. A series of nondestructive and destructive experiments (such as ultrasonic pulse velocity measurements and uniaxial compression strength tests) were conducted on granite stone to evaluate its properties in response to the salt crystallization phenomenon. The internal structure and integrity of granite samples were evaluated before and after exposure to salt crystallization cyclic tests. For the wetting/drying cycles, the environmental conditions (temperature and relative humidity) were chosen based on realistic settings, with an emphasis on avoiding the use of severe circumstances. The ultrasonic wave propagation measurements showed indirect indicators of microstructural alterations. The changes in compressive strength aligned with the findings from the other test programs. The combined results of the experimental campaign contribute to a better understanding of how salt crystallization might influence the physical and mechanical characteristics of granite masonry.
Experimental Evaluation of Salt Crystallization Induced Alterations in Granite Characteristics
Lecture Notes in Civil Engineering
Milani, Gabriele (Herausgeber:in) / Ghiassi, Bahman (Herausgeber:in) / Nazerigivi, Amin (Autor:in) / Ghiassi, Bahman (Autor:in) / Dionísio, Amélia (Autor:in) / Vasconcelos, Graça (Autor:in)
International Brick and Block Masonry Conference ; 2024 ; Birmingham, United Kingdom
13.12.2024
10 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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