waterglass

plural waterglasses

1. uncountableusuallySodium silicate.

   Waterglass (Silicate of Soda) Cement. By combining waterglass with cement or quicklime a double silicate, hard as stone and resisting chemical agents, is formed in a short time.

   1916, H.C. Standage, Cement: Pastes, Glues, and Gums, page 23

   2 more examples

   a cheaper process for fire-proofing canvas, consisting of the deposition in the fiber of a double sodium and lead silicate. Boiling solutions of basic lead acetate and of waterglass were used.

   1895, Thomas Norton, The Contributions of Chemistry to the Methods of Preventing and Extinguishing Conflagration, page 15

   A fly ash material used in a study (by Xie and Xi) contained a high fraction of reactive oxides which reacted significantly with a waterglass (Na₂SiO₃) activator, leading to a high strength within a short time and under relatively lower temperatures

   2010 July 10, Jeffrey C. Petermann, Athar Saeed, Michael I. Hammond, Aklali-Activated Geopolymers: A Literature Review, (US) Air Force Research Laboratory, page 4