Patent ID: 8460459

Claim:
An inorganic binder system comprising: 10 to 30 parts by weight of at least one latent hydraulic binder selected from blast furnace slag, slag sand, ground slag, electrothermal phosphorous slag, and steel slag; 5 to 22 parts by weight of at least one amorphous silica selected from precipitated silica, pyrogenic silica, microsilica, and glass powder; 0 to 15 parts by weight of at least one reactive filler selected from brown coal fly ash, mineral coal fly ash, metakaolin, volcanic ash, tuff, trass, pozzolana, and zeolites; 3 to 20 parts by weight of at least one silicate selected from compounds having the empirical formula mSiO 2 .nM 2 O, in which M represents Li, Na, K or NH 4 , or a mixture thereof, wherein the molar ratio of m:n is ≦3.6; wherein the binder system comprises 12 to 25% by weight of CaO; wherein 10 to 50 parts by weight of water are required for setting; and wherein the latent hydraulic binder, the amorphous silica, and the optional reactive filler are present as a first component and the silicate together with at least an amount of water required for setting are present as a second component.