Application of thermal methods in the studies of potential pozzolanic reactivity of attapulgite and sepiolite

Abstract Aim of study was to verify the effect temperature on pozzolanic reactivity thermally activated attapulgite and sepiolite samples. Activation temperatures were selected: 650, 700 750 °C for 800, 825 850 sepiolite. Content reactive SiO 2 Al O 3 after thermal treatment amount Ca(OH) consumed in reaction measured. It should be noted that a higher activation improves The upper limit increase these materials is formation enstatite deactivation silica. In addition decomposition products, series minerals formed reactions with impurities present them are also observed.