US4268316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Masonry cement composition
Assignee: Lockheed Martin Corp
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Filing: 1979-07-27
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Granted: 1981-05-19
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Expires: 1999-07-27
Abstract
Abstract A masonry cement is prepared by blending portland cement, kiln dust, and fly ash. The cement of this invention exhibits no efflorescence, good board life, workability, and acceptable color for use with such construction materials as brick, cinder block, and concrete block.
Inventors
- 👤 Milton H. Wills, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:34
CPC Classifications
C; C04; C04B; C04B7/00; C04B28/00; C04B28/02; C04B28/04; C04B7/24; C04B7/26; Y; Y02; Y02P; Y02P40/00; Y02P40/10; Y02W; Y02W30/00; Y02W30/50; Y02W30/91; Y10; Y10S; Y10S106/00; Y10S106/01
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
33 words
A masonry cement consisting of from about 25 to about 55 percent portland cement, from about 25 to about 65 percent kiln dust, and from about 10 to about 25 percent fly ash.
Claim 2
Dependent Claim
33 words
A masonry cement consisting of from about 25 to about 55 percent portland cement, from about 25 to about 65 percent kiln dust, and from about 10 to about 25 percent fly ash.
Claim 3
Dependent Claim
15 words
A cement in accordance with claim 1, wherein said portland cement comprises Type I cement.
Claim 4
Dependent Claim
12 words
A cement in accordance with claim 2, further comprising an air-entraining agent.
Claim 5
Dependent Claim
25 words
A cement as set forth by claim 3 wherein said air-entraining agent is present in an amount of from 0.02 to 0.15 percent by weight.
Claim 6
Dependent Claim
34 words
A cement in accordance with claim 3, comprising from about 50 to 55 percent portland cement, from about 25 to about 40 percent kiln dust, and from about 10 to 25 percent fly ash.
Claim 7
Dependent Claim
29 words
A cement as set forth in claim 3, comprising about 50 percent portland cement, from 20 to 35 percent kiln dust, and from 15 to 25 percent fly ash.
Claim 8
Dependent Claim
16 words
A cement as set forth in claim 2, wherein said kiln dust comprises cement kiln dust.
Claim 9
Dependent Claim
23 words
A cement as set forth in claim 2, wherein said kiln dust contains less than about 5 percent by weight of free lime.
Claim 10
Dependent Claim
29 words
A cement as set forth in claim 8, comprising about 50 percent portland cement, from 25 to 35 percent kiln dust, and from 15 to 25 percent fly ash.
Claim 11
Dependent Claim
19 words
A cement as set forth in claim 2, wherein said fly ash is produced by the combustion of coal.
Claim 12
Dependent Claim
29 words
A cement as set forth in claim 10, comprising about 50 percent portland cement, from 25 to 35 percent kiln dust, and from 15 to 25 percent fly ash.
Claim 13
Dependent Claim
48 words
A mixture consisting essentially of portland cement in an amount of from 25 to 55 percent by dry weight, cement kiln dust in an amount of from 25 to 65 percent by dry weight, and fly ash in an amount of from 10 to 25 percent by weight.
Claim 14
Dependent Claim
48 words
A mixture consisting essentially of portland cement in an amount of from 25 to 55 percent by dry weight, cement kiln dust in an amount of from 25 to 65 percent by dry weight, and fly ash in an amount of from 10 to 25 percent by weight.
Claim 15
Dependent Claim
37 words
A mixture as set forth in claim 12 wherein said portland cement comprises from 50 to 55 percent, said kiln dust comprises from 25 to 40 percent, and said fly ash comprises from 10 to 25 percent.
Claim 16
Dependent Claim
29 words
A mixture as set forth in claim 12, comprising about 50 percent portland cement, from 25 to 35 percent kiln dust, and from 15 to 20 percent fly ash.
Claim 17
Independent Claim
46 words
A method for the preparation of masonry mortar which comprises blending a mixtureconsisting of from 50 to 55 percent portland cement, from 25 to 40 percent kiln dust, and from 10 to 25 percent fly ash, with aggregate and sufficient water to produce a plastic mass.
Claim 18
Independent Claim
46 words
A method for the preparation of masonry mortar which comprises blending a mixtureconsisting of from 50 to 55 percent portland cement, from 25 to 40 percent kiln dust, and from 10 to 25 percent fly ash, with aggregate and sufficient water to produce a plastic mass.
Claim 19
Dependent Claim
33 words
A method as set forth by claim 15 wherein said mixture comprises about 50 percent type I portland cement, 25 to 35 percent cement kiln dust, and 15 to 25 percent fly ash.
Claim 20
Dependent Claim
16 words
A method as set forth by claim 15 wherein said mixture further comprises an air-entraining agent.
Claim 21
Dependent Claim
8 words
The product of the method of claim 15.
Claim 22
Dependent Claim
8 words
The product of the method of claim 16.
Claim 23
Dependent Claim
8 words
The product of the method of claim 17.
References Cited (Backward Citations)
US2250107A
Cited
US2564690A
Cited
US3192060A
Cited
US3565648A
Cited
US3852084A
Cited
US3854968A
Cited
SU514788A1
Cited
US4026716A
Cited
SU571449A1
Cited
US4018617A
Cited
US4101332A
Cited
US4038095A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-05-18 | 1984-11-17 | 1985-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-18 | 1988-11-17 | 1989-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-18 | 1992-11-17 | 1993-05-19 | $7700.00 | Window Closed / Lapsed |