Leaching assessment of high – performance mortar containing high volume fly ash as cement replacement (effect of pH level and particle size)

In this study, a high-performance mortar (HPM) was produced using fly ash as an alternative binder to increase the strength and solve problem regarding environmental degradation due harmful elements content in ash. The used study obtained from NII Tanasa Power Plant. assessment of leaching test only for HPM containing high volume (40%) compared initial After performing compressive strength, were crushed obtain particle s ize within mesh #8 #30. Two levels pH study. To detect release heavy metals HPM, Atomic absorption spectroscopy (AAS) used. results show that (lead, chromium, copper, manganese, zinc) on is lower than regulatory limit Indonesia Standard (TCLP A TCLP B). From result, it can be concluded non-hazardous material when cement replacement environmentally -friendly HPM.