Characterization and immobilization of white slag from secondary metallurgical processes in cementitious composites (original) (raw)

2015

Abstract

The fundamental objective of this study was to define such a cement composite with the addition of white (ladle) slag, which will provide functionality for selected purposes and furthermore, prevent the leaching of toxic elements into the environment. The recovery (recycling) of secondary metallurgical slags from stainless steel production has an important synergistic impact on the environment. In this study, detailed characterization of slag derived from two different ladle refining processes of stainless steel production has been performed. In order to assess its potential for use as a supplementary cementitious material, slag cement composites as well as slag itself were investigated. A comparative study of reference cement composites and cement composites to which a conventional supplementary cementitious material (limestone filler) had been added, was also performed. The results showed that the slag contains hydraulic phases to a total amount of about 50 %. Calcium aluminates a...

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