# US 4,398,960 A · Concrete mixes

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 4,398,960 A
- Document ID: US4398960A
- Status: Granted
- Kind: A
- Application number: 06/337,062
- Filed: 1982-01-04
- Granted: 1983-08-16
- Earliest claimed: 1982-01-04
- Assignees: Conger/Murray Systems, Inc.
- Inventors: John A. Murray
- Web page: https://patentgrep.com/patent/US4398960A

## CPC

- C04B 20/0076: {characterised by the grain distribution}
- 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

## Abstract

A concrete mix which comprises solids in the amount of: (a) 5-25% by weight of a calcareous cementitious binder; (b) 50-70% by weight of a coarse aggregate having a particle size in a range of about 3/8" to larger than 30 mesh, and (c) 25-35% by weight of a fine aggregate having a particle size in a range of about 100-pan mesh, and water, said mix being substantially free of aggregate having a particle size in the range of 30-50 mesh.

## Claims

### Claim 1

A concrete mix for forming concrete products curable with carbon dioxide gas which comprises solids in the amount of:
(a) 5-25% by weight of a calcareous cementitious binder;
(b) 50-70% by weight of a coarse aggregate having a particle size in a range of about 3/8" to larger than 30 mesh, and
(c) 25-35% by weight of a fine aggregate having a particle size in a range of about 100-pan mesh, and
water, said mix being substantially free of aggregate having a particle size in the range of 30 to 50 mesh.

### Claim 2 (depends on 1)

A concrete mix according to claim 1, wherein the solids in the mix comprise about 60-65% by weight of coarse aggregate, about 25-35% by weight of fine aggregate and about 5-10% by weight of binder.

### Claim 3 (depends on 1)

A concrete mix according to claim 1, wherein said calcareous cementitious binder is portland cement.

### Claim 4 (depends on 1)

A concrete mix according to claim 1, wherein said fine aggregate is limestone.

### Claim 5 (depends on 1)

A concrete mix according to claim 1, wherein water is present in an amount which is sufficient for the mixture to retain a formed configuration.

### Claim 6 (depends on 5)

A concrete mix according to claim 5, which is formed in a building product configuration.

### Claim 7 (depends on 6)

A concrete mix according to claim 6, wherein said building product is a cinder block.

### Claim 8

A process for preparing a concrete mix for forming concrete products that are curable with carbon dioxide gas which comprises combining solids in an amount of:
(a) 5-25% by weight of a calcareous cementitious binder;
(b) 50-70% by weight of a coarse aggregate having a particle size in a range of about 3/8" to larger than 30 mesh, and
(c) a fine aggregate having a particle size in a range of about 100-pan mesh, and
water, said mix being substantially free of aggregate having a particle size in a range of about 30-50 mesh.

### Claim 9 (depends on 8)

The process according to claim 8, wherein the solids and the mix comprise about 60-65% by weight of coarse aggregate, about 25-35% by weight of fine aggregate and about 5-10% by weight of binder.

### Claim 10 (depends on 8)

The process according to claim 8, wherein said calcareous cementitious binder is portland cement.

### Claim 11 (depends on 8)

The process according to claim 8, wherein said fine aggregate is limestone.

### Claim 12 (depends on 8)

The process according to claim 8, including compressing said combined mix into a building product configuration.