Binder composition comprising fine filler and fine ground granulated blast furnace slag

A binder composition comprising:

• a. between 1% and 30% in dry weight of at least one lime source;
• b. between 5% and 75% in dry weight of ground granulated blast furnace slag;
• c. between 20% and 90% in dry weight of at least one filler;
• d. between 0.1% and 5% in dry weight, relative to the total weight of components a, b and c, of SO3−;
• e. between 0.1% and 1% in dry weight, relative to the total weight of components a, b and c, of at least one water reducer polymer;
• f. between 0% and 2% in dry weight, relative to the total weight of components a, b and c, of at least one activator different from d.;
• said ground granulated blast furnace slag being a particles mixture of:
• between 10% and 100% in weight, in respect with the total weight of the ground granulated blast furnace slag, of particles having a d50 greater than or equal to 1 μm and strictly less than 5 μm,
• between 0% and 90% in weight, in respect with the total weight of the ground granulated blast furnace slag, of particles having a d50 greater than or equal to 5 μm,
• said filler being a particles mixture of:
• between 10% and 90% in weight, in respect with the total weight of the filler, of particles having a d50 greater than or equal to 0.05 μm and strictly less than 8 μm, and
• between 10% and 90% in weight, in respect with the total weight of the filler, of particles having a d50 greater than or equal to 8 μm and strictly less than 200 μm,
• measurement of d50 being done by Laser diffraction analysis, also known as Laser diffraction spectroscopy, by means of Laser diffraction analyzer such as “Mastersizer 2000” and commercialized by the MALVERN company, with the humid way method.