| abstract |
The invention relates to accelerator powders for cement, as well as quick-setting binder compositions containing accelerator powders, and to use in mortar or concrete. The accelerator powder comprises 10 to 99.7% by weight of water-insoluble mineral powder P and 0.3 to 90% by weight of alkali metal halide and alkaline earth metal halide, alkali metal nitrate and alkaline earth metal nitrate, alkali metal nitrite and alkaline earth metal nitrite. , Alkali metal thiocyanate and alkaline earth metal thiocyanate and hydroxyalkylamine or salts thereof, and at least one compound V selected from the group consisting of mixtures thereof. |