TITLE:
Investigation of the Effect of the Addition of Petroleum Waste to Interlocking Bricks Constituent
AUTHORS:
P. O. Atanda, O. O. Oluwole, I. D. Olumor
KEYWORDS:
interlocking bricks; sand; cement; replacement; petroleum waste ash;compressive strength
JOURNAL NAME:
Journal of Minerals and Materials Characterization and Engineering,
Vol.10 No.4,
March
28,
2011
ABSTRACT: Incinerator ash was investigated for its potential use as a replacement for sand and cement in
concrete interlocking bricks. The physical characteristics of the raw materials were
examined. Two sets of mixes were prepared. For the first set, sand and water quantities were
fixed while incinerator ash was used at 0% to 100% replacement by weight for cement in
steps of 10%. In the second set, incinerator ash was used at 0% to 100% replacement by
weight for sand while cement and water quantities was fixed. The mixing proportions for
cement, sand and water were 1:3:0.7, respectively. Compressive strength and leachability
tests were performed on the specimens.
Results showed that the replacement of sand by incinerator ash up to 40% exhibited higher
compressive strength than the control mix (0% incinerator ash) after 28 days curing.
Maximum compressive strength of 33.33N/mm2 was obtained after 28 days curing using using 20% incinerator ash substitution for sand. Replacement of cement by incinerator ash
up to 20% exhibited higher compressive strength than the control mix. Compressive strength
of 28.2 N/mm2 was achieved after 28 days curing period using a 20% ash substitution for cement. Leaching of heavy metals (Pb and Cd ) present in the ash was observed in
concentrated nitric acid.