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Determination of the performance of high-volume fly ash concrete. |
This phase involved the evaluation
of high-volume fly-ash concrete. Typically, in this low cement-content
concrete, large volumes of ASTM Class F fly ash (56 percent by mass of
cement) are incorporated into concrete, and the water-to-cementitious
materials ratio is kept at about 0.30. The high slumps are achieved with
the use of large dosages of a superplasticizer. In this investigation,
air-entrained concretes were made incorporating 56 percent of fly ash
by mass of cement and with water-to-cementitious materials ratios of 0.31
and 0.35. The nominal cement and fly ash contents were 155 and 200 kg/m3 respectively, in both cases. |
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