With the researches and consulting activities performed in the reuse of steel slag in road pavements, technically and environmentally correct, Kaeme also provides activities involving a self-supporting progress.

What is steel slag?

Steel slag is a metallurgical co-product generated in a final stage of steel refinement. Basically, there are two kinds of steel slag, depending on the furnace it was created: the LD slag (generated in oxygen furnace) and the EAF slag (generated in electric furnace). The steel slag present physical and mechanical characteristics similar or higher than natural aggregates.

The steel slag is assorted by ABNT/NBR 10.004/04 as a II-B class residue, passive - not dangerous. The chemical composition found are basically CaO, MgO, Al2O3, SiO2, MnO, total Fe and P2O5 , in different proportion as it depends on which plant the slag is produced.

The steel slag may be applied as: primary layer, base and sub-base of road pavements; switch engines, gabion, embankment works, among others. Kaeme evaluates each kind of application by establishing technical and environment criteria in a way it doesn’t compromise the final performance of the construction.

With defined criteria in the use of metallurgical co-products, it is possible to accomplish lower costs on works and greater resistance, assuring the support with the reduction in the use of non renewable natural resources.