RESEARCH SIGNIFICANCE The production of artificial lightweight aggregates (LWA) becomes popular due to the scarcity of natural sources. Among artificial LWA, the Albite floatation waste, which is obtained from ore preparation process of albite especially at the stage of quartz floatation, was also used as a pore-forming agent. Its chemical composition is given in Table 2 [12]. It is clear from the chemical analysis that this waste consists of high amounts of fluxing