Quick-Setting, Hydraulic Binding Agent

The present invention relates to a rapid-setting, hydraulic binder containing calcium silicate cements, in particular Portland cement, reactive calcium aluminates, in particular aluminous cement, and, if appropriate, additives and/or aggregates known per se, which binder is characterised by a content of: a) 0.1 to 2.0% by weight of an organic and/or inorganic accelerator for the hydration of the calcium silicates, b) 0.10 to 2.00% by weight of an organic and/or inorganic setting retarder retarding the hydration of the calcium silicates, if appropriate with a plasticising effect, c) 0.01 to 0.05% by weight of an organic and/or inorganic setting accelerator for calcium aluminate hydrate and d) 0.01 to 0.20% by weight of a retardant for the formation of calcium aluminium sulphate hydrates.