Binder composition comprising fine filler and fine ground granulated blast furnace slag
A binder composition in dry weight percentage comprises a) between 1% and 30% of at least one lime source, b) between 5% and 75% of ground granulated blast furnace slag, (c) between 20% and 90% of at least one filler, (d) between 0.1% and 5% of SO 3 − , e) between 0.1% and 1% of at least one water reducer polymer, f) between 0% and 2%, relative to the total weight of components a, b and c, of at least one activator different from d, the weights of d, e, f relative to the total weight of components a, b, c, said ground granulated blast furnace slag and the filler each being a mixture of two differently sized particles, the different sizes based on d 50 and range of between 1 μm and 5 μm and >5 μm for the slag and between 0.05 μm and <8 μm and ≥8 μm and <200 μm for the filler.
1 . 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 SO 3 − ;
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 d 50 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 d 50 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 d 50 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 d 50 greater than or equal to 8 μm and strictly less than 200 μm, measurement of d 50 being done by Laser diffraction analysis, by means of Laser diffraction analyzer with a humid way method.
2 . The binder composition according to claim 1 , wherein the lime source is Portland cement or lime.
3 . The binder composition according to claim 1 , wherein the lime source is Portland cement, at least a portion of which being ultrafine cement having a d 50 , lower than or equal to 8 μm,
measurement of d 50 being done by Laser diffraction analysis, by means of Laser diffraction analyzer with the humid way method.
4 . The binder composition according to claim 1 , wherein the filler is a natural material.
5 . The binder composition according to claim 1 , wherein the SO 3 − is from sodium sulfate, potassium sulfate, calcium sulfate, anhydride sulfate, or mixture thereof.
6 . The binder composition according to claim 1 , wherein the water reducing polymer is selected from the group consisting of lignosulfonate polymers, melamine sulfonate polymers, naphthalene sulfonate polymers, polycarboxylic acid ether polymers, polyoxyethylene phosphonates, vinyl copolymers, and mixtures thereof.
7 . The binder composition according to claim 1 , wherein the activator different from d is an alkaline metal salt.
8 . A dry concrete composition or dry industrial mortar composition comprising at least one aggregate and the binder composition according to claim 1 .
9 . A wet concrete composition or wet industrial mortar composition comprising at least one aggregate, the binder composition according to claim 1 and water.
10 . A hardened concrete composition or hardened industrial mortar composition obtained from the wet concrete composition or wet industrial mortar composition according to claim 9 .
11 . A process for preparing the wet concrete composition or the wet industrial mortar composition according to claim 9 comprising a step of mixing with water, at least one aggregate and 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 SO 3 − ;
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 d 50 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 d 50 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 d 50 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 d 50 greater than or equal to 8 μm and strictly less than 200 μm,
measurement of d 50 being done by Laser diffraction analysis by means of Laser diffraction analyzer with a humid way method, the binder composition being prepared before the mixing step or in situ during the mixing step from at least some of the components a) to f) of the binder composition taken separately and/or under a form of premix(es).
12 . The process according to claim 11 , wherein a ratio water to binder composition is comprised between 0.1 and 0.5.