Civil Engineering Reference
In-Depth Information
Fig. 4.16
Properties of concrete with fly ash aggregates (Siddique
2003a
,
b
)
Fig. 4.17 Chloride corrosion
rate of concrete with FA as
partial replacement of fine
aggregates (Maslehuddin
et al.
1989
)
content of PFA rose due to the increase of the fine content in the concrete mix. For
dry PFA, the slump was not significantly affected at PFA/sand ratio of 0.05; but
slump was reduced due to the addition of a higher amount of dry PFA. However,
the authors observed similar cohesion and finishability of the concrete with PFA
aggregates and the conventional concrete mix. To control the slump of the con-
crete mix with PFA, the authors suggested using a superplasticizer. They observed
better bleeding performance of concrete mix with both dry and moist PFA
aggregates than that of the conventional concrete mix.
