Enhancing the Pozzolanic Reactivity of Spent Bleaching Earth Ash (SBEA) in Binary Blended Cement Mortar through Calcination

The effects of calcination on spent bleaching earth ash (SBEA) were investigated in terms its contribution to pozzolanic reactivity as well the strength blended cement mortar when used partial substitution. SBEA waste, which is plentiful global stock, showed some potential material reduce reliance traditional clinker cement. However, actual research use replacement and how it may benefit from was still very limited. This paper can conclude that contains sufficient silica alumina oxides satisfactory levels be classified Class N natural pozzolan. By calcining up a temperature 700 °C, improved due amorphisation contents, leading an increase allowable level replacements 30 40 % peak achieved. These findings allowed calcined greater volume compared untreated SBEA. It also worth noting excessively high around 900 °C found detrimental both development mortars.