RT Journal Article T1 Preservation strategies for avoidance of salt crystallisation in El Paular Monastery cloister, Madrid, Spain A1 López Arce, Paula A1 Fort González, Rafael A1 Gómez Heras, Miguel A1 Pérez-Monserrat, Elena Mercedes A1 Varas Muriel, María Josefa AB El Paular Monastery (eleventh century) is one of the most important Carthusian monasteries in Spain and is highly affected by crystallisation of Mg-sulphates, together with chlorides and nitrates. Urgent remediation of the decay process is needed to guarantee the stability of the building materials from the cloister and to make their hallways suitable for the exhibition of an important collection of seventeenth century paintings. This paper aims to characterise the building materials, salts and their interaction to suggest preservation strategies to minimise the impact of salts both in the short and the long term. These strategies include architectural solutions (such as a ventilation system to avoid increasing dampness and hence the dissolution, mobilisation and crystallisation of salts), petrophysical-based solutions (i. e. exploiting the porosity differences between building materials and poultices to maximise salt reduction) and strategies based on the physicochemical behaviour of salts and relative humidity transfer through the stone (to determine the most suitable environmental conditions to prevent crystallisation of the most harmful salt species). This research represents both a practical and experimental exercise that is useful for conservation scientists and restorers involved in the field of preservation of monuments, and for environmental control to avoid salt crystallisation. PB Springer SN ISSN: 1866-6280, online ISSN: 1866-6299 YR 2011 FD 2011 LK https://hdl.handle.net/20.500.14352/42830 UL https://hdl.handle.net/20.500.14352/42830 LA eng NO Ministerio de Economía y Competitividad (MINECO) NO Comunidad de Madrid NO Universidad Complutense de Madrid DS Docta Complutense RD 12 abr 2025