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Development of Geopolymer Concrete Based On Oil Palm Ashes
Nur Atikah Binti Mohd Saad
Supervisor: Dr Mohd Al Amin Bin Muhamad Nor
Bachelor of Science (Chemical Sciences)
School of Fundamental Science
Geopolymer Concrete (GPC) is combination of fly ash that contains high percentage
of silicon and aluminum that reacts with alkaline activator to become cementitious.
The effect of ratio of alkaline activator to fly ash (0.2-0.5 wt %) and curing
temperature (50-90℃) was investigated. GPC was characterized for microstructure
and strength using SEM and Universal Testing Machine, respectively. Overall results
for compressive strength of GPC ranges from 0.91 to 1.83 MPa. 0.3 wt % GPC at 90℃
after 14 days curing time shows the highest strength which is comparable to ordinary
Portland cement (OPC) that has 2.22 MPa with difference of 9.6 %. Microstructure of
0.3 wt % GPC shows similar crystalloid porous to OPC. As a conclusion, 0.3 wt % of
GPC is highly potential to be used as a concrete.
435 | U M T U N D E R G R A D U A T E R E S E A R C H D A Y 2018