Nathan Mendes, Celso P. Fernandes, Paulo C. Philippi and Roberto Lamberts
Bibliographic info:
Building Simulation, 7, 2001, Rio de Janeiro, Brazil, p. 957-964

The present  work  deals with  the  determination  of a mathematical correlation for conductivity in the fully water-saturated state in  terms  of  dry-basis conductivity and porosity. In the mathematical model, the material microstructure is taken into account in a multiscale percolation system and the macroscopical conductivity is obtained with a renormalization technique. The model is presented and the obtained correlation is tested for some porous  building materials .  To  conclude,  we  show  how  porosity  can affect thermal conductivity.