| abstract |
Described is a solid body formed with Si, Al, Ca, O and at least one of Na and K, said body exhibiting in the 27Al MAS NMR spectrum a signal additional to the 27Al MAS NMR spectrum of pure calcium aluminate, with a chemical shift sited between that of the main peak of calcium aluminate and the peak next upfield to the main peak of calcium aluminate. Possible uses of the solid body include use as a building material with aggregates, as a coating, as an adhesive for joining two components for sanitary ceramic units, for high-temperature applications, for renovating existing edifices, especially for underwater renovation, for the erection and/or repair of built structures, particularly when high compressive strengths are needed or chemically aggressive conditions arise. It can be produced by bringing waterglass, sodium hydroxide and/or potassium hydroxide, calcium aluminate, one or more aggregates and optionally water, especially sea water, into contact, even at temperatures below 0°C without heating. |