Is it possible to achieve High-Quality Concrete with Partial Substitution of Fly Ash?

Abstract This study aims to determine the characteristics of high-quality concrete using fly ash as a partial replacement for PCC cement. Tests include slump testing, density factor and concrete compressive strength testing. Two variations of the concrete mix are made, namely the variation without fly ash and the 15% fly ash mixture. The results of this study indicate that the characteristics of concrete with fly ash substitution require the same amount of water as the concrete without fly ash to achieve the desired slump value. The density factor values obtained are also the same. In the concrete compressive strength test, the variation of the 15% fly ash mixture was higher than that of the 0% fly ash mixture.