Simultaneous measurement of thermal conductivity and thermal diffusivity of some building materials using the transient hot strip method

Abstract

A transient hot strip method developed by Gustafsson (1979), for simultaneous measurement of thermal conductivity and thermal diffusivity of solids and fluids with low electrical conductivity, is used for the simultaneous measurements of thermal conductivity and thermal diffusivity of some building materials such as dry dune sand, dry brick powder, dry cement, dry mud powder and dry asbestos powder at room temperature and normal pressure. The hot strip works both as a plane heat source and a temperature sensing device. The experimental values of thermal conductivity and thermal diffusivity of these materials are compared with those obtained from thermal probe and hot-wire methods. A good agreement in the values indicates that the transient hot strip (ThS) method can also be used for loose porous materials for obtaining these thermal parameters.