Experimental Study on the Influence of Fly Ash and Slag on Strength of Concrete

Abstract

Fly ash and slag are the most common admixture in the concrete, which can improve the strength and durability of concrete. The variation of compressive strength, splitting strength and flexural strength of pebble cement concrete were studied in this paper. The results prove that: flay ash and slag can enhance the strength and improve the performance of concrete; fly ash mainly play a role in the early stage of concrete strength growth and slag mainly play a role in the later stage. The research could provide a reference for preparing the high-strength concrete.