PROPERTIES OF HIGH STRENGTH CONCRETE USING "CLASSIFIED FLY ASH." FLY ASH, SILICA FUME, SLAG, AND NATURAL POZZOLANS IN CONCRETE. PROCEEDINGS, FOURTH INTERNATIONAL CONFERENCE, ISTANBUL, TURKEY, MAY 1992. VOLUME I

This research focuses on the effective utilization of fly ash produced from power plants. Three classes of 'classified fly ash' were studied. Special attention was focused on concrete strength enhancement, and basic properties of fresh concrete and hardended concrete with low water-binder ratio and high strength. It is shown that the classified fly ash is an effective material that contributes to the reduction of superplasticizer requirements that are used in high strength concrete. It also contributes to improvement of workability, and improvement of strength either alone or in combination with granulated blast furnace slag.