Properties of plasters suitable for reconstruction of historical buildings

Abstract

Basic physical properties, mechanical properties, hygric and thermal properties of several types of plasters which are used in the reconstruction of historical buildings in the Czech Republic, among them lime-pozzolan plasters with different pozzolans, commercial renovation renders and thermal insulation plasters, are investigated. Pure lime plaster and lime-cement plaster are studied as well, for the sake of comparison. Mechanical properties include the compressive strength and bending strength which are measured using standard methods. Orientation values of moisture diffusivity are determined using the results of water sorptivity measurements. Water vapor diffusion permeability is measured by the cup method. Sorption isotherms are determined by the desiccator method. Thermal conductivity and specific heat capacity are measured by an impulse technique. © 2013 WIT Press.