Sodium silicate solutions from dissolution of glasswastes. Statistical analysis


  • M. Torres-Carrasco Eduardo Torroja Institute for Construction Sciences (IETcc-CSIC) (Madrid, Spain)
  • J. G. Palomo School of Building Engineering (EUATM-UPM) (Madrid, Spain)
  • F. Puertas Eduardo Torroja Institute for Construction Sciences (IETcc-CSIC) (Madrid, Spain)



Waste glass, Alkaline cements, Solubility, Sodium silicate hydrates (waterglass), Alkaline activators


It has studied the solubility process of four different waste glasses (with different particle sizes, <45 µm and>125 µm) in alkaline solutions (NaOH and NaOH/Na₂CO₃) and water as a reference and under different conditions of solubility (at room temperature, at 80°C and a mechano-chemical process). Have established the optimal conditions of solubility and generation of sodium silicates solutions, and these were: the smaller particle size (<45 µm), with NaOH/Na₂CO₃ solution and with temperature during 6 hours of stirring time. The statistical analyses of the results give importance to the studied variables and the interactions. Through ²⁹Si NMR MAS it has confirmed the formation after dissolution processes of monomeric silicate, suitable for use as an activator in the preparation of alkaline cements and concretes.


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How to Cite

Torres-Carrasco, M., Palomo, J. G., & Puertas, F. (2014). Sodium silicate solutions from dissolution of glasswastes. Statistical analysis. Materiales De Construcción, 64(314), e014.



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