Construction material compositions having high early and late strength

A binder composition comprising

• A) Portland cement clinker in an amount of 25 to 94.089 wt.-%;
• B) calcium sulfate x H2O in an amount of 5 to 20 wt.-%, wherein x is selected from 0 to 2;
• C) an inorganic sulfate source having a solubility higher than 100 g/l at 20° C. in an amount of 0.3 to 10 wt.-%;
• D) polyalcohol and/or metal salts thereof in an amount of 0.2 to 5 wt.-%;
• E) a carbonate selected of the group consisting of organic carbonate, alkali carbonate, and mixtures thereof, in an amount of 0.3 to 5 wt.-%;
• F) a component F) selected from the group consisting of a compound of formula (I), a polycondensate of said compound of formula (I), and mixtures thereof, wherein formula (I) is represented by
• wherein
• R1 is OH;
• R2 is H, OH, C1-C6 alkoxy, —SO2X, —SO3X, —OSO3X, —PO, —PO3X2, —OPO3X2, —Z—COOX or —CH(OH)—SO3X;
• R3 is H, COOX, C3-C6 alkyl which may be substituted by 1 to 6 OH or C1-C6 alkoxy;
• m is 0 or 1;
• or
• R1 and R2 taken together with the carbon atom to which they are attached form a carbonyl group provided m is 0;
• R4 is COOY or SO3X;
• X is selected from H or a cation equivalent Ka wherein K is selected from an alkali metal, alkaline earth metal, zinc, iron, ammonium or phosphonium cation and a is 1/n wherein n is the valency of the cation;
• Y=is selected from X, C1-C6 alkyl or phenyl;
• and
• Z is CH2 or CH(OH), in an amount of 0.101 to 3.5 wt.-%;
• and
• G) dispersant having a charge density of more than 0.80 μeq/g in an amount of 0.01 to 1 wt.-%;
• each based on the total weight of the binder composition.

A method comprising utilizing a retarding mixture (RM) comprising

• RM1) a carbonate selected from the group consisting of organic carbonate, alkali carbonate, and mixtures thereof, in an amount of from 30 to 60 wt.-%;
• RM2) NR1R2R3 and/or metal salts thereof, wherein R1 to R3 are independently C1-C6-hydroxyalkyl, in an amount of from 5 to 20 wt.-%;
• RM3) R5—(CHOH)0—R4 and/or metal salts thereof, wherein R4 and R5 are independently C1-C6-hydroxyalkyl, wherein o is an integer from 0-1, in an amount of from 10 to 30 wt.-%;
• RM4) a component RM4) selected from the group consisting of a compound of formula (I), a polycondensate of said compound of formula (I), and mixtures thereof, wherein formula (I) is represented by
• wherein
• R1 is OH;
• R2 is H, OH, C1-C6 alkoxy, —SO2X, —SO3X, —OSO3X, —PO, —PO3X2, —OPO3X2, —Z—OOX or —CH(OH)—SO3X;
• R3 is H, COOX, C3-C6 alkyl which may be substituted by 1 to 6 OH or C1-C6 alkoxy;
• m is 0 or 1;
• or
• R1 and R2 taken together with the carbon atom to which they are attached form a carbonyl group provided m is 0;
• R4 is COOY or SO3X;
• X is selected from H or a cation equivalent Ka wherein K is selected from an alkali metal, alkaline earth metal, zinc, iron, ammonium or phosphonium cation and a is 1/n wherein n is the valency of the cation;
• Y=is selected from X, C1-C6 alkyl or phenyl;
• and
• Z is CH2 or CH(OH), in an amount of from 12 to 50 wt.-%;
• each based on the total weight of the retarding mixture (RM),
• and a dispersant having a charge density of more than 0.80 μeq/g for improving the spread and/or the compressive strength of a construction material composition comprising Portland cement clinker, calcium sulfate, sodium sulfate, and optionally supplementary cementitious material.

A method comprising utilizing a retarding mixture (RM) comprising

• RM1) a carbonate selected from the group consisting of organic carbonate, alkali carbonate, and mixtures thereof, in an amount of from 30 to 60 wt.-%;
• RM2) NR1R2R3 and/or metal salts thereof, wherein R1 to R3 are independently C1-C6-hydroxyalkyl, in an amount of from 5 to 20 wt.-%;
• RM3) R5—(CHOH)n—R4 and/or metal salts thereof, wherein R4 and R5 are independently C1-C6-hydroxyalkyl, wherein o is an integer from 0-1, in an amount of from 10 to 30 wt.-%;
• RM4) a component RM4) selected from the group consisting of a compound of formula (I), a polycondensate of said compound of formula (I), and mixtures thereof, wherein formula (I) is represented by
• wherein
• R1 is OH;
• R2 is H, OH, C1-C6 alkoxy, —SO2X, —SO3X, —OSO3X, —PO, —PO3X2, —OPO3X2, —Z—COOX or —CH(OH)—SO3X;
• R3 is H, COOX, C3-C6 alkyl which may be substituted by 1 to 6 OH or C1-C6 alkoxy;
• m is 0 or 1;
• or
• R1 and R2 taken together with the carbon atom to which they are attached form a carbonyl group provided m is 0;
• R4 is COOY or SO3X;
• X is selected from H or a cation equivalent Ka wherein K is selected from an alkali metal, alkaline earth metal, zinc, iron, ammonium or phosphonium cation and a is 1/n wherein n is the valency of the cation;
• Y=is selected from X, C1-C6 alkyl or phenyl;
• and
• Z is CH2 or CH(OH),
• in an amount of from 12 to 50 wt.-%;
• each based on the total weight of the retarding mixture (RM),
• and a dispersant having a charge density of more than 0.80 μeq/g for retarding the hardening of inorganic binder containing building material formulations and/or for producing building products.