Salt Weathering of Natural Stone: A Review of Comparative Laboratory Studies

Natural stone is an important component of historical heritage (buildings and art objects such as sculptures or rock engravings), it still widely used in contemporary works. Soluble salts are the main erosive agent built environment, we review here comparative studies that subject same type to testing with different salt solutions. The results mostly support accepted notion major impact sodium sulphate, although there some exceptions. effects chloride calcium sulphate deserve specific discussion given field information on relevance these environment. We relate collected issues risk assessment (considering both geochemical conditions effects) conservation interventions (highlighting interest tests do not produce damage susceptible materials) present methodological suggestions avoid a case study culture.