Producing sodium silicate powder from iron ore tailings for use as an activator in one-part geopolymer binders

•Mining tailings can be used in the production of an alternative sodium silicate.•Eco-friendly and low-cost activators can be produced from SiO2-rich waste materials.•New activators boost geopolymer competitiveness over conventional cements. Mine tailings disposal is an increasingly important issue...

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Veröffentlicht in:	Materials letters 2021-04, Vol.288, p.129333, Article 129333
Hauptverfasser:	Figueiredo, Ricardo A.M., Brandão, Paulo R.G., Soutsos, Marios, Henriques, Andréia B., Fourie, Andy, Mazzinghy, Douglas B.
Format:	Artikel
Sprache:	eng
Schlagworte:	Alkaline activator Alternative binder Chemical composition Compressive strength Damage assessment Geopolymer Geopolymers Iron compounds Iron ores Materials science Mining waste Morphology Portland cements Silicon dioxide Sodium hydroxide Sodium silicates Sustainability Tailings
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