Contribution to Strength for Cement Paste by Pozzolanic Reaction of Fly Ash

Abstract

Influence of HF treatment of fly ash on the strength of hardened bodies was investigated in order to evaluate the contribution of the pozzolanic reaction of glass phase in the fly ash surface to the compressive strength of the hardened bodies. X-ray diffraction and SEM have been used to characterize the hardened bodies as well as the fly ash used. These results indicated that the pozzolanic reaction of glass in the fly ash is important to enhance the strength of the hardened bodies.