Gómez Heras, MiguelFigueiredo, CarlosVaras Muriel, María JosefaMaurício, AntonioÁlvarez de Buergo, MónicaAires Barros, LuisFort, Rafael2024-10-112024-10-112006Gómez-Heras1, M. et al. (2006). Thermal Stresses. In: KOURKOULIS, S.K. (eds) Fracture and Failure of Natural Building Stones. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-5077-0_2610.1007/978-1-4020-5077-0_26https://hdl.handle.net/20.500.14352/108908The study of the decay promoted in building stones by fire is important in the context of the conservation and restoration of historic buildings. As opposed to granular stones, which are more sensitive to chemical changes, tough stones present a noticeable mechanical decay after being affected by fires. The direct observation of decay features at a micro-scale could be the key for understanding the decay processes at greater scales, especially in the cases where extensive sampling is not recommendable or even possible. Microscopic techniques allow quantifying fracture system and establishing differences among different types of fractures. Results obtained so far have demonstrated image analysis and processing techniques as a useful tool to help establishing, in a qualitative and quantitative way, the fracture system variations resulting from mechanical stresses induced by fire.engconference paperhttps://doi.org/10.1007/978-1-4020-5077-0_26restricted access552Stone decayThermal behaviourPetrophysicsFracture systemsImage analysesPetrología2506.13 Petrología Ignea y Metamórfica