Blast furnace slag as a partial replacement for Portland cement

ABSTRACT

The civil construction industry is responsible for the emission of carbon dioxide (CO₂), for each ton of cement produced, approximately one ton of carbon dioxide is emitted into the atmosphere. Therefore, the present work has as general objective to study the technical feasibility of using the Blast Furnace Slag (EAF), cooled instantly as a substitute for Portland cement. For this work, clinker, standardized sand, plaster, drinking water and EAF were used as materials. As a methodology, the materials were milled to the desired granulometry, which passed through the 0.075mm sieve. After this process, the characterization of these materials started, followed by the replacement of clinker, in the contents of 5, 15, 30, 50 and 75% by EAF. The results of this substitution showed that the tailings were characterized as an excellent by-product in the manufacture of cement, presenting characteristics for large-scale use in search of reducing CO₂ emissions.

Keywords
Blast Furnace Slag; Clinker; Mortar