Civil Engineering Reference
In-Depth Information
Figure 32.
Total heat evolved by cement blends during hydration.
The addition of supplementary materials such as fly ash and silica
fume affects the induction period in cement hydration. The relative effects
have been illustrated by conduction calorimetric curves.
[80]
The relative effects of 10% of fly ash, limestone, or sludge on the
hydration of portland cement have been investigated by DTA/DTG/TG and
XRD. Based on Ca(OH)
2
estimation, it has been concluded that lime sludge
and limestone enhance hydration of cement compared to that by slag or fly
ash.
[81]
