Claims
- 1. A cement composition additive comprising:
water; microspheres; and a water swellable clay suspending agent.
- 2. The additive of claim 1 wherein said microspheres are fly ash microspheres.
- 3. The additive of claim 1 wherein said microspheres are synthetic hollow glass microspheres.
- 4. The additive of claim 1 wherein said microspheres are formed of a chemically stable soda-lime borosilicate glass composition.
- 5. The additive of claim 4 wherein said chemically stable soda-lime borosilicate glass composition is non-porous.
- 6. The additive of claim 1 wherein said microspheres are present in an amount in the range of from about 30% to about 100% by weight of water in said additive.
- 7. The additive of claim 1 wherein said microspheres are present in an amount of about 67% by weight of water in said additive.
- 8. The additive of claim 1 wherein said clay suspending agent is selected from the group consisting of sodium bentonite, attapulgite, kaolinite, meta-kaolinite, hectorite and sepiolite.
- 9. The additive of claim 1 wherein said clay suspending agent is sodium bentonite.
- 10. The additive of claim 9 wherein said sodium bentonite is present in an amount of about 2% by weight of water in said additive.
- 11. The additive of claim 1 wherein said clay suspending agent is present in an amount in the range of from about 1% to about 4% by weight of water in said additive.
- 12. A cement composition additive comprising:
water; microspheres present in an amount in the range of from about 30% to about 100% by weight of water in said additive; and a water swellable clay suspending agent present in an amount in the range of from about 1% to about 4% by weight of water.
- 13. The additive of claim 12 wherein said microspheres are fly ash microspheres.
- 14. The additive of claim 12 wherein said microspheres are synthetic hollow glass microspheres.
- 15. The additive of claim 12 wherein said microspheres are formed of a chemically stable soda-lime borosilicate glass composition.
- 16. The additive of claim 15 wherein said chemically stable soda-lime borosilicate glass composition is non-porous.
- 17. The additive of claim 12 wherein said clay suspending agent is selected from the group consisting of sodium bentonite, attapulgite, kaolinite, meta-kaolinite, hectorite and sepiolite.
- 18. The additive of claim 12 wherein said microspheres are present in an amount of about 67% by weight of water in said additive.
- 19. The additive of claim 12 wherein said clay suspending agent is sodium bentonite.
- 20. The additive of claim 19 wherein said sodium bentonite is present in an amount of about 2% by weight of water in said additive.
- 21. A cement composition additive comprising:
water; microspheres selected from the group consisting of fly ash microspheres and synthetic hollow glass microspheres; and a water swellable clay suspending agent selected from the group consisting of sodium bentonite, attapulgite, kaolinite, meta-kaolinite, hectorite and sepiolite.
- 22. The additive of claim 21 wherein said microspheres are present in an amount in the range of from about 30% to about 100% by weight of water in said additive.
- 23. The additive of claim 21 wherein said clay suspending agent is present in an amount in the range of from about 1% to about 4% by weight of water in said additive.
- 24. A cement composition additive comprising:
water; microspheres selected from the group consisting of fly ash microspheres and synthetic hollow glass microspheres present in an amount in the range of from about 30% to about 100% by weight of water in the additive; and a water swellable clay suspending agent selected from the group consisting of sodium bentonite, attapulgite, kaolinite, meta-kaolinite, hectorite and sepiolite present in an amount in the range of from about 1% to about 4% by weight of water.
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application is a divisional of application Ser. No. 10/103,449 filed on Mar. 21, 2002, which is a continuation-in-part of application Ser. No. 10/005,266 filed on Dec. 3, 2001.
Divisions (1)
|
Number |
Date |
Country |
Parent |
10103449 |
Mar 2002 |
US |
Child |
10603489 |
Jun 2003 |
US |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
10005266 |
Dec 2001 |
US |
Child |
10103449 |
Mar 2002 |
US |