Granted Patent B2

US 12,673,897 · App. 17/600,213 · Granted Jul 7, 2026

Inventor: Jérémy Becquet (Venette, FR)

Assignee: BOSTIK SA

C04B28/04C04B28/065C04B28/14C04B2111/00672C04B2111/32C04B2111/60

Abstract

Claims (34)

1 . A dry mortar or concrete composition comprising:

a hydraulic binder composition comprising:

at least one Portland cement;

at least one amorphous calcium aluminate, the at least one amorphous calcium aluminate comprising at least 60% of amorphous phase;

calcium sulfate;

at least one alkali metal salt selected from the group consisting of K 2 CO 3 , Rb 2 CO 3 , Cs 2 CO 3 and mixtures thereof; wherein a weight ratio of the at least one alkali metal salt:the at least one amorphous calcium aluminate ranges from 0.01 to 0.2, and a total weight content of the at least one alkali metal salt in the dry mortar or concrete composition ranges from 0.05% to 0.30% by weight relative to a total weight of the dry mortar or concrete composition;

at least one aggregate; and

one or more polymers chosen from copolymers of vinyl acetate, copolymers of vinyl versatates, copolymers of ethylene, polyvinyl alcohols, styrene/butadiene aqueous dispersions, styrene/acrylic aqueous dispersions, styrene/acrylate aqueous dispersions, acrylic aqueous dispersions and vinyl acetate aqueous dispersions.

2 . The dry mortar or concrete composition as claimed in claim 1 , comprising:

from 15% to 80% by weight of the hydraulic binder composition as defined in claim 1 ;

from 15% to 80% by weight of the at least one aggregate;

from 0% to 5% by weight of additive(s); and

up to 10% by weight of the one or more polymer;

wherein percentages by weight being relative to a total weight of the dry mortar or concrete composition.

3 . The dry mortar or concrete composition as claimed in claim 2 , wherein the additives are selected from the group consisting of setting accelerators, setting retarders, antifoaming agents, water repellents, antiaging agents, rheological agents, and mixtures thereof.

4 . The dry mortar or concrete composition as claimed in claim 1 , wherein the at least one aggregates is selected from the group consisting of gravel, chippings, sand, calcium carbonate, dolomite, recycled glass, and mixtures thereof.

5 . The dry mortar or concrete composition as claimed in claim 1 , wherein the at least one alkali metal salt:the at least one amorphous calcium aluminate(s) weight ratio ranges from 0.02 to 0.06.

6 . The dry mortar or concrete composition as claimed in claim 1 , wherein a weight content of the at least one alkali metal salt in the hydraulic binder composition ranges from 0.1% to 0.8% by weight, relative to a total weight of the hydraulic binder composition.

7 . The dry mortar or concrete composition as claimed in claim 1 , wherein the at least one alkali metal salt is K 2 CO 3 .

8 . The dry mortar or concrete composition as claimed in claim 1 , wherein the calcium sulfate is chosen from anhydrous calcium sulfate (or anhydrite) (generally denoted anhydrous CaSO 4 ), calcium sulfate dihydrate (or gypsum) (CaSO 4 ·2H 2 O), calcium sulfate semihydrate (hemihydrate or bassanite), and mixtures thereof.

9 . The dry mortar or concrete composition as claimed in claim 1 , wherein a weight content of the calcium sulfate in the hydraulic binder composition ranges from 1% to 30% by weight relative to a total weight of the hydraulic binder composition.

10 . The dry mortar or concrete composition as claimed in claim 1 , wherein the at least one Portland cement is selected from the group consisting of CEM I Portland cements, CEM II Portland cements, CEM III Portland cements, CEM IV Portland cements, CEM V Portland cements, and mixtures thereof.

11 . The dry mortar or concrete composition as claimed in claim 1 , wherein the at least one Portland cement comprises a CEM I 52.5 N Portland cement, a CEM I 52.5 R Portland cement, a CEM I 42.5 R Portland cement or a CEM I 42.5 N Portland cement.

12 . The dry mortar or concrete composition as claimed in claim 1 , wherein a total content of the at least one Portland cement varies from 10% to 80% by weight relative to a total weight of the hydraulic binder composition.

13 . A wet mortar or wet concrete composition comprising:

a dry mortar or concrete composition comprising

a hydraulic binder composition comprising:

at least one Portland cement;

at least one amorphous calcium aluminate, the at least one amorphous calcium aluminate comprising at least 60% of amorphous phase;

calcium sulfate;

at least one alkali metal salt selected from the group consisting of K 2 CO 3 , Rb 2 CO 3 , Cs 2 CO 3 and mixtures thereof; wherein a weight ratio of the at least one alkali metal salt:the at least one amorphous calcium aluminate ranges from 0.01 to 0.2, and a total weight content of the at least one alkali metal salt in the dry mortar or concrete composition ranges from 0.05% to 0.30% by weight relative to a total weight of the dry mortar or concrete composition;

at least one aggregate; and

one or more polymers chosen from copolymers of vinyl acetate, copolymers of vinyl versatates, copolymers of ethylene, polyvinyl alcohols, styrene/butadiene aqueous dispersions, styrene/acrylic aqueous dispersions, styrene/acrylate aqueous dispersions, acrylic aqueous dispersions and vinyl acetate aqueous dispersions; and

water.

Assignments (2)

Priority Claims (1)

Continuity (1)

References Cited (26)