Use of incinerator ash as a replacement for cement and sand in cement mortars

Results indicate that incinerator ash caused a reduction in slump values when it was used as a replacement for sand while an opposite trend was observed when it was used as a replacement for cement. The replacement of sand by incinerator ash up to 40% exhibited a higher compressive strength than the control mix (0% incinerator ash) for most curing periods. The maximum compressive strength of 36.4 N/mm2 was achieved using 20% incinerator ash after 28 days of curing. Specimens prepared using 20% incinerator ash replacement for cement yielded a higher compressive strength than the control mix after 14 and 28 days of curing. The maximum compressive strength of 27.4N/mm2 was achieved at 28 days curing period.