Mechanical and hydric properties of alkali-activated aluminosilicate composite with electrical porcelain aggregates

Basic mechanical and hydric properties of alkali-activated aluminosilicate composite with electrical porcelain aggregates are investigated in dependence on previous thermal load up to 1200 °C. The compressive strength is found to increase by a factor of two after heating to 1200 °C, the bending strength even by a factor of six compared to the reference measurements on specimens not subjected to any thermal treatment. Water and water vapor transport is enhanced after heating to 600 °C and more. These results can be considered as quite advantageous for a material which can supposedly be used as protective layer of current reinforced concrete structures.