US4642137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mineral binder and compositions employing the same
Assignee: Lone Star Industries Inc
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Filing: 1985-03-06
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Granted: 1987-02-10
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Expires: 2005-03-06
Abstract
Abstract A binder composition for Portland cement is disclosed, said composition including 100 parts by weight metakaolin and, based upon said metakaolin, from 20 to 70 parts by weight slag; from 85 to 130 parts by weight of at least 1 material selected from the class consisting of fly ash, calcined shale, and calcined clay; from 70 to 215 parts by weight finely divided silica, preferably amorphous silica; and from 55 to 145 parts by weight of a mixture of potassium silicate and potassium hydroxide, wherein at least 55 parts by weight is potassium silicate. The binder composition can be mixed with Portland cement or with a combination of Portland cement and fly ash to provide a composition curable to a material having a high early strength and a high ultimate strength.
Inventors
- 👤 Richard F. Heitzmann
- 👤 Mark Fitzgerald
- 👤 James L. Sawyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:57
CPC Classifications
C; C04; C04B; C04B28/00; C04B12/00; C04B12/005; C04B28/006; C04B28/02; C04B28/04; C04B28/24; C04B28/26; Y; Y02; Y02P; Y02P40/00; Y02P40/10; Y02W; Y02W30/00; Y02W30/50; Y02W30/91
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
79 words
A binder composition for Portland cement comprising 100 parts, by weight, metakaolin and, based upon said metakaolin: 20 to 70 parts by weight slag 85 to 130 parts by weight of at least one material selected from the class consisting of fly ash, calcined shale, and calcined clay 70 to 215 parts amorphous silica 55 to 145 parts of a material selected from the class consisting of potassium silicate and potassium hydroxide, at least 55 parts being potassium silicate.
Claim 2
Dependent Claim
79 words
A binder composition for Portland cement comprising 100 parts, by weight, metakaolin and, based upon said metakaolin: 20 to 70 parts by weight slag 85 to 130 parts by weight of at least one material selected from the class consisting of fly ash, calcined shale, and calcined clay 70 to 215 parts amorphous silica 55 to 145 parts of a material selected from the class consisting of potassium silicate and potassium hydroxide, at least 55 parts being potassium silicate.
Claim 3
Dependent Claim
12 words
The binder of claim 1 wherein the amorphous silica is silica fume.
Claim 4
Dependent Claim
20 words
The binder composition of claim 1 wherein the amount of amorphous silica is from 85 to 160 parts, by weight.
Claim 5
Dependent Claim
17 words
The binder composition of claim 3 wherein the amount is from 85 to 115 parts, by weight.
Claim 6
Dependent Claim
22 words
The binder composition of claim 1 wherein said slag is contained in an amount of from 30 to 50 parts by weight.
Claim 7
Dependent Claim
25 words
The binder composition of claim 1 wherein the material selected from the class consisting of fly ash, calcined shale, and calcined clay is fly ash.
Claim 8
Dependent Claim
23 words
The binder composition of claim 1 wherein the amount of potassium silicate and potassium hydroxide is from 65 to 115 parts by weight.
Claim 9
Dependent Claim
28 words
A cement composition comprising, on a weight basis, from 40 to 70 parts Portland cement and from 60 to 30 parts of the binder composition of claim 1.
Claim 10
Dependent Claim
38 words
The cement composition of claim 8 wherein said Portland cement is contained in an amount of from 55 to 65 parts by weight and said binder composition in an amount of from 45 to 35 parts by weight.
Claim 11
Dependent Claim
15 words
The cement composition of claim 9 having, in addition, 20 parts, by weight, fly ash.
Claim 12
Dependent Claim
79 words
A binder composition for Portland cement comprising 100 parts, by weight, metakaolin and, based upon said metakaolin: 20 to 70 parts by weight slag 85 to 130 parts by weight of at least one material selected from the class consisting of fly ash, calcined shale, and calcined clay 70 to 215 parts amorphous silica 55 to 145 parts of a material selected from the class consisting of potassium silicate and sodium hydroxide, at least 55 parts being potassium silicate.
Claim 13
Dependent Claim
79 words
A binder composition for Portland cement comprising 100 parts, by weight, metakaolin and, based upon said metakaolin: 20 to 70 parts by weight slag 85 to 130 parts by weight of at least one material selected from the class consisting of fly ash, calcined shale, and calcined clay 70 to 215 parts amorphous silica 55 to 145 parts of a material selected from the class consisting of potassium silicate and sodium hydroxide, at least 55 parts being potassium silicate.
Claim 14
Dependent Claim
79 words
A binder composition for Portland cement comprising 100 parts, by weight, metakaolin and, based upon said metakaolin: 20 to 70 parts by weight slag 85 to 130 parts by weight of at least one material selected from the class consisting of fly ash, calcined shale, and calcined clay 70 to 215 parts amorphous silica 55 to 145 parts of a material selected from the class consisting of sodium silicate and sodium hydroxide, at least 55 parts being sodium silicate.
Claim 15
Dependent Claim
79 words
A binder composition for Portland cement comprising 100 parts, by weight, metakaolin and, based upon said metakaolin: 20 to 70 parts by weight slag 85 to 130 parts by weight of at least one material selected from the class consisting of fly ash, calcined shale, and calcined clay 70 to 215 parts amorphous silica 55 to 145 parts of a material selected from the class consisting of sodium silicate and sodium hydroxide, at least 55 parts being sodium silicate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-09 | 1990-08-11 | 1991-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-09 | 1994-08-11 | 1995-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-09 | 1998-08-11 | 1999-02-10 | $7700.00 | Window Closed / Lapsed |