Investigation of the processes causing the degradation of the sandstone used on the Thorn church based on mineralogical analysis

The rapid degradation of the Thorn-sandstone could be explained by the presence of organics or minerals such as swelling glauconite, oxidized glauconite or non-swelling clays sensitive to hydric variations despite being non-swelling. A variety of tests and observations have been carried out to identify the most likely process of degradation....