Physical and mechanical performance of cement-based renders with different contents of fly ash, expanded cork granules and expanded clay

The reduction of cement binder and sand aggregate contents led to lower thermal conductivity and a decrease of the mechanical properties. However, the balance between the physical and mechanical performance allows different applications, reaching thermal mortars with distinct EN 998 classes: (i) thermal conductivity T1 or T2; (ii) compressive strength CSI or CSII; (iii) water capillary absorption W0 or W1.