Title:
Design and Elaboration of Concrete Mixtures Using Steelmaking Slags
Author(s):
Juan Manuel Manso, David Hernandez, Maria Milagros Losanez, and Javier Jesus Gonzalez
Publication:
Materials Journal
Volume:
108
Issue:
6
Appears on pages(s):
673-681
Keywords:
Electric arc furnace slag; ladle furnace slag; rapid setting; recycling; strength; workability.
DOI:
10.14359/51683471
Date:
11/1/2011
Abstract:
The use of electric arc furnace oxidizing slag (EAFS) is discussed in this paper as a high-quality coarse aggregate for the manufacture of concrete. Ladle furnace reducing slag (LFS) is also discussed, both as a fine aggregate and a potentially hydraulic material. A single system is used for proportioning this type of concrete, in which the presence of very fine inert materials is a determinant. The properties of this type of fresh concrete are evaluated, which in some cases exhibit rapid setting. In a hardened state, their physicomechanical properties are those of high-quality concretes, showing outstanding compressive strength. It is concluded that high proportions of EAFS and moderate proportions of LFS may be used in the manufacture of precast concretes, and that, in this case, the latter demonstrates considerable hydraulic activity.