Properties of Alkali Activated Aluminosilicate Material after Thermal Load

The porosity, bulk density, compressive strength, bending strength, thermal conductivity, and specific heat capacity of a material based on alkali activated slag are determined at room temperature conditions for samples subjected to a thermal load up to 1200◦C prior to the measurements and compared to reference material data. The results are discussed using material characterization experiments, namely, X-ray diffraction analysis and scanning electron microscopy. Experimental results show a remarkable hightemperature resistance of the studied material, which after pre-heating to 1200◦C exhibits mechanical properties comparable to the reference material not exposed to any thermal load