Clay-bearing sandstones are found around the world and are well-known for their poor durability. This poses a particular problem in the Swiss plateau, as such stones are the fabric of our most important historical monuments, in particular, the cathedrals in Lausanne, Fribourg and Bern, the Castle of Chillon, but also many historic masonry homes. This collaborative grant capitalizes on recent research including the development of novel sensors for the onsite monitoring of moisture changes and water movement, both on and within the stone. It also benefits from a unique laboratory testing facility to reproduce critical climatic cycles, allowing a full characterization of heat and mass transfer properties of these materials under well-controlled, but practice-relevant, conditions. Through a multidisciplinary approach, the project will develop predictive tools capable of assessing the development of damage in response to local climate variations. This will enable a more effective design and execution of conservation interventions grounded in material science and accounting for the microclimate of the local exposure conditions.
Plus d’informations :
[Website ETH Zurich]