A REVIEW OF USE STEEL SLAG IN CONCRETE MIXES FOR RIGID PAVEMENT

Abstract

Steel slag is an industrial by-product obtained from the steel manufacturing industry. It is produced in large
quantities during the steel-making operations which utilize Electric Arc Furnaces (EAF). Steel slag can also be produced by
melting iron ore in the Basic Oxygen Furnace (BOF). Steel slag is currently used as aggregate in concrete mix slab
applications, but there is a need for some additional work to determine the feasibility of utilizing this industrial by -product
more wisely as a replacement for both fine and coarse aggregates in a conventional concrete mixture. Concrete mix volume
is up to 75% of aggregates. Replacing all or some portion of natural aggregates by steel slag would lead to considerable
strength and environmental benefits.
Target of this research also is to check the strength of steel slag concrete if it is suitable in rigid pavement in place of natural
aggregate concrete. In order to know suitability of steel slag concrete, laboratory experiments have been carried out for
checking the different properties of fresh and hardened concrete for workability t, compressive, flexural and split tensile
strength. The cube, beams and cylinders have been made, cured for 7 and 28 days, after that they have been tested by using
loading machine (equipment). The results from the laboratory were analyzed according to the Indian standard specification.
All experimental results for fresh and hardened concrete showed that the increasing the steel slag % in concrete mix, could
improve the properties of concrete. The coarse steel slag aggregates showed good workability as well as strength of concrete
as shown in the laboratory results in this research.