Lime-cement mortars for coating with improved thermal and acoustic performance

A parametric analysis allowed to identify some relations linking water to binder ratio to open porosity, free shrinkage and cracking risk at early ages; apparent density to thermal conductivity of samples without fibers and open porosity to mechanical performance and sound absorption coefficient. Lightweight aggregates and fibers showed a different behavior, especially on thermal and acoustic performance, because of a different pore structure. The combined effect of GGA, LWA and fibers improved thermal and acoustic performance of lime-cement mortars.