techniques for their reuse [4–20]. Several investigations on the
re-use of steelmaking slags have been published over the last decades;
some of them concerning mortar and concrete (rigid-stiff
matrices) [21–43], and mixtures with granular soils
(compliant-flexible and porous matrices) [44–58].
Electric arc furnace oxidizing slag (EAFS) is a by-product of the
steelmaking industry, generated after the melting and the primary
acid refining of liquid steel. Its chemical composition is based on its
content of calcium, iron and silicon oxides in a global amount of
over 80%; aluminium, magnesium, manganese and phosphorus
oxides are also present. Variations in the proportion of these oxides
are due to the kind of steel, the refractory materials of the furnace
and some technological advances. In standard oxidizing electric arc
furnace slag (EAFS), the proportion of acid oxides (silica, alumina,
iron oxide ...) is predominant on the proportion of basic oxides
(lime, magnesia and alkalis).