CONCRETE Optimizing the Use of Fly Ash in Concrete
Fly ash, a powder resembling cement, has been used in concrete since the 1930s. (IMG12190) Table 1. Dosage Levels of Fly Ash Level of Fly Ash Classifiion % by mass of total cementitious material <15 Low 1530 Moderate 3050 High >50 Very High. 2 The Nature of Fly Ash Fly ash is a byproduct of burning pulverized coal in an electrical generating station. Specifically, it is the unburned ...