Determination of thermal parameters of the composite building materials solid phase

摘要

Commonly manufactured mortars and plasters were analysed from the aspect of the relationships among their composition, pore structure and dry thermal conductivity. The thermal conductivity analysis of the considered materials was done in order to find the most appropriate model of the configuration of particular phases and components in a heat flow path. The dry thermal conductivity of plasters and mortars depends on the thermal conductivity of used aggregate, binder, fillers and on the porosity. In case of unsatisfactory information on the material composition and component properties the simple microstructure model of thermal conductivity enables to estimate the thermal conductivity from the total porosity of a material.