ACTIVATION SYSTEM, INCLUDING AN ALKALINE METAL SALT AND CALCIUM AND/OR MAGNESIUM CARBONATE FOR ACTIVATING GROUND GRANULATED BLAST FURNACE SLAG AND BINDER COMPRISING THE SAME FOR THE PREPARATION OF MORTAR OR CONCRETE COMPOSITION

摘要

The invention concerns an activating composition, in particular for concrete or industrial mortars containing hydraulic binder and/or pozzolanic material comprising: A) at least 40% by weight, preferably at least 50% by weight of calcium carbonate and/or magnesium carbonate particles having a d80 less than or equal to 15 µm, and a d50 less than or equal to 4 µm, and B) at least 1.5% by weight and up to 60% by weight of at least one alkaline metal salt. The invention also concerns a binder composition comprising said activating composition, and a component C consisting in at least one hydraulic binder. The invention is further directed to dry concrete or industrial mortar compositions comprising at least one aggregate and said binder composition. In addition, the invention relates to a process for preparing wet concrete or mortar compositions and to hardened concrete or industrial mortar compositions obtained therefrom.