US 12,686,638 B2Granted

Binder composition comprising pozzolanic material and fine filler

AssigneesEcocem Materials Limited, Ecole Normale Superieure Paris-Saclay, Centre National de la Recherche Scientifique (CNRS), Institut National Des Sciences Appliquees De Toulouse, Universite Paul Sabatier Toulouse III

InventorsLaurent Frouin, Roberta Alfani, Tanya Gutsalenko, Thomas Wattez, Mohend Chaouche, Martin Cyr

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Abstract

A binder composition in dry weight percentage comprising a) between 1% and 30% of Portland cement, lime or a mixture thereof, b) between 1% and 40% of ground granulated blast furnace slag, c) between 20% and 50% of at least one pozzolanic material, d) between 20% and 65% of at least one filler, e) between 0.5% and 10%, relative to the total weight of components a, b, c, and d, of at least one activator, f) between 0.05% and 1.5%, relative to the total weight of components a, b, c and d, of at least one water reducer polymer, the filler being a mixture between 10% and 90% in weight of particles having a d50≥0.05 μm and <8 μm, and between 10% and 90% in weight of particles having a d50≥8 μm and <200 μm, the filler mixture weight percentages in respect to total weight of the filler.

Claims11

Dependent claims

A binder composition comprising:

a. between 1% and 30% in dry weight of Portland cement, lime or a mixture thereof;
b. between 1% and 40% in dry weight of ground granulated blast furnace slag;
c. between 20% and 50% in dry weight of at least one pozzolanic material;
d. between 20% and 65% in dry weight of at least one filler;
e. between 0.5% and 10% in dry weight, relative to the total weight of components a, b, c and d, of at least one activator;
f. between 0.05% and 1.5% in dry weight, relative to the total weight of components a, b, c and d, of at least one water reducer polymer;
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 by means of Laser diffraction analyzer with a humid way method.

6 more elements

Dependencies are inferred from the claim text.