a report prepared by the Virginia
Highway and Transportation
Research Council (VHTRC) and summarized by Halstead (1986), several
relating to the use of fly ash concrete for construction of highways
highway structures were discussed. These restraints include the
precautions may be necessary to ensure that the proper amount of
all fly ashes have sufficient pozzolanic activity to provide good
fly ashes are not always available near the construction site, and
transportation costs may nullify any cost advantage.
proportions might have to be modified for any chance in the fly ash
the cement-fly ash reaction is influenced by the properties of the
is important for the executing agency not only to test and approve each
source but also to investigate the properties of the specific fly
combination to be used for each project.