ABSTRACT
Refurbishment plasters according to WTA-Specifications (International Association for the Science and Technology in Maintenance of Structures and Protection of Monuments) are used for damp and salt contaminated interior or exterior walls. These specifications should lead to well standardised products with comparable behaviour in practice. For the fresh mortar as well as for the hardened mortar the material properties are fixed within narrow limits. But none of these properties are describing the influence of this plaster on the drying characteristics of a wall. For selected refurbishment plaster systems the drying process on brick has been examined. To also be able to simulate this process by calculations, the necessary moisture properties (diffusion resistance, capillary transport coefficient, moisture retention function) of the individual plaster layers have been determined. The half loss time of the drying process has been determined with help of the measurements and the calculations. The experiments show, that the drying process of two examined plaster systems clearly differ from each other.
