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Effect of mechanical activation on the hydraulic properties of stainless steel slags

Lubica Kriskova, Yiannis Pontikes

2012enstainless steel slaghydraulic propertiesmechanical activationhydrationX-ray diffraction

Abstract

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This work aims to assess the possibility of using ladle metallurgy and argon oxygen decarburization stainless steel slag as a hydraulic binder after mechanical activation. Prolonged milling in ethanol suspension resulted in a ten-fold increase of the surface area and increase of the amorphous phase. Calorimetric analysis of slags mixed with water indicated the occurrence of exothermic reactions. XRD results revealed that periclase, merwinite, γ-C2S and bredigite decreased with hydration time. Thermogravimetric analyses indicated that the main hydration products are most probably C–S–H, CH and MH. The hydrated products in both slags were similar to C–S–H gel. WDS analysis demonstrated Ca and Si to be widespread in the structure. Formation of M–S–H gel or incorporation of Mg in the C–S–H gel remains uncertain. The 90 days compressive strength of mortars prepared from slags reached approximately 20% for LM and 10% for AOD of the compressive strength of mortars prepared from OPC.

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@article{4e90a0ea-542f-445c-bf7d-c3249ede6ad8,
  title={Effect of mechanical activation on the hydraulic properties of stainless steel slags},
  author={Lubica Kriskova and Yiannis Pontikes},
  year={2012},
  language={en}
}
TY  - JOUR
TI  - Effect of mechanical activation on the hydraulic properties of stainless steel slags
AU  - Lubica Kriskova
AU  - Yiannis Pontikes
PY  - 2012
LA  - en
ER  -

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