Study on using cement-fly ash treated steel slag aggregate as base for pavement

Abstract

Traditional building materials are increasingly scarce while industrial waste is produced more and more. In this paper, the author used steel slag aggregate to replace crushed aggregate in treated aggregate. Fly ash admixture with a content of 10% to 30% was added to the treated aggregate. Experimental results determined the compressive strength, splitting tensile strength, and elastic modulus of cement-fly ash treated steel slag aggregate in 7, 14, 28, and 56 days show that it can be used as the base for road pavement. Treated steel slag aggregate with 30% fly ash content can be used as the base course of road pavement.

Keywords: Steel slag; fly ash; cement treated; compressive strength; splitting tensile strength and elastic modulus.