초록 ▼

A fly ash composition is provided which includes a blend of Class C fly ash, potassium carbonate, and lithium carbonate, which, in combination, reduce alkali silica reactivity when the fly ash composition is used in concrete applications. The fly ash composition includes from about 65 to 99 wt % Cla

A fly ash composition is provided which includes a blend of Class C fly ash, potassium carbonate, and lithium carbonate, which, in combination, reduce alkali silica reactivity when the fly ash composition is used in concrete applications. The fly ash composition includes from about 65 to 99 wt % Class C fly ash, from about 0.1 wt. % to about 4 wt % potassium carbonate, and from about 0.1 wt. % to about 4 wt. % lithium carbonate.

대표청구항 ▼

1. A fly ash composition for use in a concrete mix comprising from about 65 wt. % to about 99% wt. % Class C fly ash; from about 0.1 wt. % to about 4 wt. % of lithium carbonate, from about 0.1 to about 5 wt % potassium carbonate, from about 0.1 to about 26% by weight of a retarding agent, and from a

1. A fly ash composition for use in a concrete mix comprising from about 65 wt. % to about 99% wt. % Class C fly ash; from about 0.1 wt. % to about 4 wt. % of lithium carbonate, from about 0.1 to about 5 wt % potassium carbonate, from about 0.1 to about 26% by weight of a retarding agent, and from about 0.1 to about 5% by weight of a chelating agent.