Fast binding for self-compacting concrete, use and applications of such binding.

Rapid binder for self-compacting concrete comprising with respect to the dry weight of the binder: - 70% to 90% of Portland cement - 4 to 16% of calcium aluminate, - 4 to 14% of calcium sulfate in the form of anhydrite, - a accelerator and retarder, and - at least one adjuvant comprising a water reducer, characterized in that: - 0 to 2% of hydrated lime Ca (OH) 2 can be added, and - the water reducer comprises at least one superplasticizer constituted by a water-soluble or hydrodispersible organic compound comprising at least one amino-di (alkylene phosphonic) group and at least one polyoxyalkylated chain or at least one of its salts, and wherein said superplasticizer is a compound (I) or a salt of the compound.