Abstract
The possibility of increasing the usage of Fly ash
(FA) in concrete has been a subject of interest and investigation
by the authors. In the previous work, a composite of Fly ash- β-
cyclodextrin (FA-β-CD) has been seen to have the tendencies of
improving hydration reaction. To have further insight on how
this composite can affect the mechanical properties of concrete,
its rheological properties (viscosity and setting time) are
assessed in this article. FA was used in percentages of 30 and
50, while β-CD was used in 0.025, 0.05 and 0.1 percentages.
These percentages were based on the total percentage of
cement (by mass). The results showed that increased in FA and
β-CD contents, reduced the viscosity of the cement paste. Also,
higher contents of FA and β-CD, reduced the water required
for consistency and extended the setting times.