Fly Ash Class F

Summary of Advantages

INTEGRATED Materials Inc. fly ash is a pozzolan for concrete, consisting of the "finely divided residue that results from the combustion of ground or powdered coal" as defined by ASTM C 618. A pozzolan, as defined by ASTM, reacts chemically with calcium hydroxide produced by the hydration of portland cement to form additional cementitious compounds.

INTEGRATED Materials Inc. Class F fly ash significantly increases the ability of concrete to resist attack from sulfates in soil or ground water. Additionally, Class F fly ash has been proven through extensive research and field experience to be highly effective in mitigating the deleterious effects of expansive alkali-silica reactions (ASR) in concrete. It is produced from the combustion of pulverized bituminous or lignite coal.

When correctly proportioned, concrete that contains fly ash can have equivalent or greater 28 day compressive strengths when compared to plain portland cement concrete. Due to the pozzolanic reaction, fly ash concrete will continue to gain strength beyond 28 days exceeding that of plain portland cement concrete.

INTEGRATED Materials Inc. Class F fly ash can be used as a pozzolan in virtually any concrete application. When correctly proportioned, Class F fly ash will add many benefits such as increased strength, increased durability and reduced permeability. Class F fly ash is particularly beneficial in high performance concrete applications where high compressive strenghts are required or where exposure conditions demand highly durable concrete.

Class F fly ash is also very effective at mitigating problems associated with alkali-silica reactions. In mass concrete placements wehere low heat of hydration is required, Class F fly ash is advantageous in controlling temperature rise.