SUITABILITY OF SUGARCANE BAGASSE ASH AND ALKALINE ACTIVATED RICE HUSK ASH AS PARTIAL REPLACEMENT FOR CEMENT IN CONCRETE

ABSTRACT
In this study, the suitability of Sugarcane bagasse ash and alkaline
activated rice husk ash as Cementious materials in partial replacement for
cement in concrete was investigated. The Sugarcane bagasse ash and
activated rice husk ash were used to partially replace cement by
percentage of 5%, 10%, 15% and 20% in concrete cube samples. 60
number of grade 20 concrete cubes and 60 numbers of grade 25 concrete
cubes were cast in laboratory and cured for 7, 14, 21, and 28 days in
accordance to BS1881: part 116: 1983. Water/cement ratio of 0.55 was
used in the work; the study is aimed towards managing the of Sugarcane
bagasse and rice husks through reuse so as to reduce there accumulation
which constitute nuisance on the environment and could cause
environmental health hazards. The Sugarcane bagasse was incinerated,
sieved after incineration using sieve size of 150􀟤m and was later mixed
with the activated rice husk ash in the laboratory at equal percentage.
However despite the observed loss in compressive strengths of the
concrete, it can still be used for various application requiring medium and
low strength in accordance to concrete grade 5, a strength which is
achieved with these replacement of Sugarcane bagasse ash and activated
rice husk ash in concrete: such as non-load bearing concrete wall,
sidewalks, road barrier, concrete block, kerbs. The amount of concrete
produce worldwide for this application could ensure the viability of this
study.

Keywords: Sugarcane Bagasse Ash, Rice Husk Ash, Cementious Material,
Environmental Health Hazard, Compressive Strength.