Abstract

For a long time, steel slag was not an attractive building material due to some of its adverse properties like volume instability. However, as the steel industry grew, the amount of steel slag as a by-product also increased, and the need for a proper and environmentally acceptable solution for dealing with this material had to be addressed. This chapter presents the most common steel slag applications in the building industry and lists its basic properties within different applications, as well as possible research issues in the future. Steel slag applications in clinker production, as an aggregate in concrete and mortar, as constituent material in all pavement layers (unbound, hydraulically bound, and asphalt courses), and as a substance used in acid mine treatment are explained, highlighting the advantages and disadvantages of each application.

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