The Susceptibility to Salt Fog Degradation of Stone Cladding Materials: A Laboratory Case Study on Two Limestones from Portugal
The article investigates the susceptibility of two Portuguese limestones, Moleanos (MO) and Semi-Rijo (SR), to salt fog degradation for enhancing stone selection methods in sustainable stone facades. Salt weathering is a significant factor in the deterioration of stonework, facades, and masonry. The study focused on analysing salt fog decay cycles to improve stone-cladding dimensioning practices. Results indicated that salt fog exposure caused weight loss, increased porosity, and mechanical decay in both limestones. Flexural strength notably decreased in MO and SR after exposure to salt fog. Microscopic analysis revealed that salt