| abstract |
The present invention relates to accelerator powders for cement and fast setting binder compositions comprising said accelerator powders, and also to their use in mortar or concrete. The accelerator powder comprises 10 to 99.7% by weight of a water-insoluble mineral powder P and 0.3 to 90% by weight of at least one compound V selected from the group consisting of alkali and alkaline earth metal halides , alkali metal and alkaline earth metal nitrates, alkali metal and alkaline earth metal nitrites, alkali metal and alkaline earth metal thiocyanates and hydroxyalkylamines or salts thereof, and mixtures thereof. |