US4509985A
Expired / Lapsed
US
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Early high-strength mineral polymer
Assignee: Lone Star Industries Inc
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Filing: 1984-02-22
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Granted: 1985-04-09
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Expires: 2004-02-22
Abstract
Abstract An early high-strength mineral polymer composition is formed of a polysialatesiloxo material obtained by adding a reactant mixture consisting of alumino-silicate oxide (Si 2 O 5 ,Al 2 O 2 ) with the aluminum cation in a four-fold coordination, strong alkalis such as sodium hydroxide and/or potassium hydroxide, water, and a sodium/potassium polysilicate solution; and from 15 to 26 parts, by weight, based upon the reactive mixture of the polysialatesiloxo polymer of ground blast furnace slag. Sufficient hardening for demolding is obtained in about 1 hour with this composition.
Inventors
- 👤 Joseph Davidovits
- 👤 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; C04B28/24; C04B28/26; C04B14/00; C04B14/02; C04B14/04; C04B28/006; Y; Y02; Y02P; Y02P40/00; Y02P40/10; Y02W; Y02W30/00; Y02W30/50; Y02W30/91
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
138 words
An early high strength concrete composition obtained by adding ground blast furnace slag to a reactant mixture consisting of alumino-silicate oxide (Si 2 O 5 ,Al 2 O 2 ) n with the aluminum cation in four-fold coordination, strong alkalis selected from the group consisting of sodium hydroxide and potassium hydroxide, water and a member selected from the class consisting of sodium and potassium polisilicate solutions, said reactant mixture having the following oxide mole ratio: M 2 O/SiO 2 : 0.20 to 0.36 SiO 2 /Al 2 O 3 : 3.0 to 4.12 H 2 O/M 2 O: 12 to 20 M 2 O/Al 2 O 3 : 0.6 to 1.36 where M 2 O represents a member selected from the class consisting of Na 2 O, K 2 O, and the mixture (Na 2 O,K 2 O).
Claim 2
Dependent Claim
138 words
An early high strength concrete composition obtained by adding ground blast furnace slag to a reactant mixture consisting of alumino-silicate oxide (Si 2 O 5 ,Al 2 O 2 ) n with the aluminum cation in four-fold coordination, strong alkalis selected from the group consisting of sodium hydroxide and potassium hydroxide, water and a member selected from the class consisting of sodium and potassium polisilicate solutions, said reactant mixture having the following oxide mole ratio: M 2 O/SiO 2 : 0.20 to 0.36 SiO 2 /Al 2 O 3 : 3.0 to 4.12 H 2 O/M 2 O: 12 to 20 M 2 O/Al 2 O 3 : 0.6 to 1.36 where M 2 O represents a member selected from the class consisting of Na 2 O, K 2 O, and the mixture (Na 2 O,K 2 O).
Claim 3
Dependent Claim
28 words
An early high-strength concrete composition according to claim 1, where the amount of ground blast furnace slag is 15% to 26% by weight of the said reactant mixture.
Claim 4
Dependent Claim
17 words
An early high-strength concrete composition according to claim 2, where the slag/water ratio is higher than 0.42.
Claim 5
Dependent Claim
26 words
An early high-strength concrete composition according to claim 1, where the H 2 O/M 2 O mole ratio is in the range of 12 to 16.
Claim 6
Dependent Claim
44 words
An early high-strength concrete composition according to claim 1, which has compressive strength better than 1000 psi by 1 hour at 150° F. and 6000 psi by 4 hours at 150° F. when tested in a standard 1 to 2.75 by weight cement-sand mortar.
Claim 7
Dependent Claim
21 words
An early high-strength concrete composition according to claim 5 where the shrinkage, in air, after two months is lower than 0.020.
References Cited (Backward Citations)
US4349386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-08 | 1988-10-08 | 1989-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-08 | 1992-10-08 | 1993-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-08 | 1996-10-08 | 1997-04-09 | $7700.00 | Window Closed / Lapsed |