Influence of Original and Ground Fly Ash on Compressive Strength, Porosity and Chloride Resistance of Concrete
Keywords:Compressive strength; Corrosion; Chloride, Concrete; Porosity; Fly ash
This research presents a study of the compressive strength, porosity, resistance to chloride and corrosion of concrete containing fly ashes with different fineness. Ordinary Portland Cement Type I (CT) was partially replaced with original fly ash (FAO), ground medium fly ash (GFAM) and ground fine fly ash (GFAF) at the dosage levels of 20%, 30% and 40% by weight of cementitious materials. Water to binder ratio with a constant of 0.45 was used in this research. Superplasticizer (SP) was used to improve the workability of concrete. Test results found that the use of fine fly ash (GFAF) produced mixes of concrete with low porosity and good compressive strength. The resistance to chloride and corrosion of original fly ash (FAO) concrete increase in comparison with that of Ordinary Portland Cement Type I (CT).
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