US5110362A
Expired / Lapsed
US
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Cement compositions
Assignee: WR Grace and Co Conn
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Filing: 1990-03-12
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Granted: 1992-05-05
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Expires: 2010-03-12
Abstract
Abstract Cement compositions containing fly ash having a carbon content are given satisfactory air entrainment by including a water soluble C8 fatty acid salt.
Inventors
- 👤 John T. Hoarty
- 👤 Leslie Hodgkinson
- 👤 Michael J. Waddicor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:23
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B24/00; C04B24/08; C04B24/085; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91; Y10; Y10S; Y10S106/00; Y10S106/01
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
106 words
In a cement composition comprising cement and greater than 0 and up to 65% by weight of pulverised fuel ash having a range of loss on ignition of about 1.5% to about [6%] 12% by weight, the improvement which comprises adding an are entraining effective amount of an air entrainment agent selected from the group consisting of water soluble C9/C10 fatty acids salts, abietic acid salts, ether sulphates, alkyl sulphonates, alkyl aryl sulphonates and amine oxide salts together with an effective amount of sodium or potassium octanoate, the octanoate being present in an amount sufficient to stabilize entrained air and lower the rate of air loss.
Claim 2
Dependent Claim
106 words
In a cement composition comprising cement and greater than 0 and up to 65% by weight of pulverised fuel ash having a range of loss on ignition of about 1.5% to about [6%] 12% by weight, the improvement which comprises adding an are entraining effective amount of an air entrainment agent selected from the group consisting of water soluble C9/C10 fatty acids salts, abietic acid salts, ether sulphates, alkyl sulphonates, alkyl aryl sulphonates and amine oxide salts together with an effective amount of sodium or potassium octanoate, the octanoate being present in an amount sufficient to stabilize entrained air and lower the rate of air loss.
Claim 3
Dependent Claim
22 words
A cement composition according to claim 1 wherein the amount of octainoate is at most about 0.1% by weight of cement present.
References Cited (Backward Citations)
US4257815A
Cited
US4828619A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-05-05 | 1995-11-04 | 1996-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-05 | 1999-11-04 | 2000-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-05 | 2003-11-04 | 2004-05-05 | $7700.00 | Window Closed / Lapsed |