# US 10,308,554 B2 · Concrete composition

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- Number: US 10,308,554 B2
- Document ID: US10308554B2
- Status: Granted
- Kind: B2
- Application number: 15/576,179
- Filed: 2016-05-18
- Published: 2018-05-31
- Granted: 2019-06-04
- Earliest claimed: 2015-05-26
- Assignees: Holcim Technology Ltd
- Applicants: Holcim Technology Ltd.
- Inventors: David Babayan; Moussa Baalbaki; Bill Gong
- Web page: https://patentgrep.com/patent/US10308554B2

## CPC

- C04B 28/04: Portland cements
- C04B 14/06: Quartz; Sand
- C04B 22/064: {of the alkaline-earth metals}
- C04B 24/023: {Ethers}
- C04B 24/04: Carboxylic acids; Salts, anhydrides or esters thereof
- C04B 24/20: Sulfonated aromatic compounds
- C04B 24/2611: {Polyalkenes}
- C04B 28/08: Slag cements
- C04B 2103/302: {Water reducers}
- C04B 2111/00068: {Mortar or concrete mixtures with an unusual water/cement ratio}
- C04B 2111/60: Flooring materials
- C04B 2201/50: for the mechanical strength
- Y02P 40/10: Production of cement, e.g. improving or optimising the production methods; Cement grinding
- Y02W 30/91: Use of waste materials as fillers for mortars or concrete
- C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02W: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT

## Abstract

The concrete composition includes, in a mixture with water, a hydraulic binder, sand and aggregates, wherein the hydraulic binder includes a Portland cement of high reactivity, and the hydraulic binder is present in an amount of 280-340 kg per cubic meter of concrete, a shrinkage reducing admixture is present in an amount of 0-4 L per cubic meter of concrete, and water is present in an amount of 140-160 L per cubic meter of concrete.

## Claims

### Claim 1

A concrete composition comprising, in a mixture with water, a hydraulic binder, sand and aggregates, wherein the hydraulic binder comprises a Portland cement of high reactivity, wherein the Portland cement has a Blaine fineness of 4500-6500 cm2/g, characterized in that the hydraulic binder is present in an amount of 280-310 kg per cubic meter of concrete, that a shrinkage reducing admixture is present in an amount of 3-4 L per cubic meter of concrete, wherein the shrinkage reducing admixture is an organic admixture, and that water is present in an amount of 140-160 l per cubic meter of concrete.

### Claim 2 (depends on 1)

A concrete composition according to claim 1, wherein the reactivity of the hydraulic binder is selected so as to obtain a 28d compressive strength of the concrete of >52.5 MPa.

### Claim 3 (depends on 1)

A concrete composition according to claim 1, wherein the reactivity of the hydraulic binder is selected so as to obtain a 1d compressive strength of the concrete of >20 MPa.

### Claim 4 (depends on 1)

A concrete composition according to claim 1, wherein the hydraulic binder comprises a supplementary cementitious material.

### Claim 5 (depends on 4)

A concrete composition according to claim 4, wherein the supplementary cementitious material is present in an amount of 1-20 wt.-% of the hydraulic binder.

### Claim 6 (depends on 4)

A concrete composition according to claim 4, wherein the supplementary cementitious material has a Blaine fineness of 4500-6500 cm2/g.

### Claim 7 (depends on 1)

A concrete composition according to claim 1, further comprising an expanding agent in an amount of 0.5-3 wt. % of the hydraulic binder.

### Claim 8 (depends on 1)

A concrete composition according to claim 1, further comprising a water reducing agent.

### Claim 9 (depends on 8)

A concrete composition according to claim 8, wherein the water reducing agent comprises poly-carboxylate ether or polynaphthalene sulfonate.

### Claim 10 (depends on 1)

A concrete composition according to claim 1, wherein the concrete composition is freshly mixed and the amount of water and hydraulic binder is selected so as to reach a flow of the freshly mixed concrete at 10 min of at least 100 mm+/−10 mm.

### Claim 11 (depends on 1)

A concrete composition according to claim 1, wherein within less than 50 days after placing the concrete has a relative humidity of 80% according to ASTM F2170.

### Claim 12 (depends on 1)

A concrete composition according to claim 1, wherein the shrinkage reducing admixture is based on polypropylene glycol, polyethylene glycol and/or a glycol ether derivative, and is, optionally, in a liquid mixture with surfactants.

### Claim 13 (depends on 4)

A concrete composition according to claim 4, wherein the hydraulic binder comprises, as the supplementary cementitious material, ground granulated blast furnace slag, fly ash, pozzolans, ground limestone or mixtures thereof.

### Claim 14 (depends on 7)

A concrete composition according to claim 7, wherein the expanding agent comprises CaO.

### Claim 15 (depends on 8)

A concrete composition according to claim 8, wherein the water reducing agent, is present in an amount between 0.4 and 1 wt. % of the hydraulic binder.

### Claim 16 (depends on 1)

A concrete composition according to claim 1, wherein within less than 40 days after placing the concrete has a relative humidity of 80% according to ASTM F2170.

### Claim 17 (depends on 1)

A concrete composition according to claim 1, wherein within less than 30 days after placing the concrete has a relative humidity of 80% according to ASTM F2170.

### Claim 18 (depends on 1)

A construction element comprising concrete obtained from a concrete mix composition according to claim 1.