US4256500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pozzolan cement compositions
Assignee: Partners Ltd
•
Filing: 1980-02-12
•
Granted: 1981-03-17
•
Expires: 2000-02-12
Abstract
Abstract A cement composition comprising cement, a pozzolan material, fine aggregate, air, water, at least one alkali metal constituent selected from the group consisting of sodium, potassium, and lithium ions, and at least one anionic constituent which is capable of forming complexes with ferric ions, is soluble in water, and forms a calcium salt which is also water soluble, wherein the alkali metal constituent is present in an amount up to approximately 4.0 percent by weight, in terms of the equivalent weight of sodium ions, of the pozzolan material; the anionic constituent is present in an amount up to approximately 6.0 percent by weight, in terms of the equivalent weight of chloride ions, of the pozzolan material; and the cement composition is further characterized by: (a) having a solid volume ratio of cement to the pozzolan material within the range of approximately 0.05 to 2.0; (b) having a ratio of the volume of paste (fly ash, cement, air, and water) to the solid volume of sand within the range of approximately 0.75 to 2.5; and (c) having a ratio of the solid volume of cement to the volume of mortar less than about 0.19. The cement composition of the present invention is substantially less expensive than cement compositions presently employed in the industry having equivalent compressive strengths.
Inventors
- 👤 Raymond C. Turpin, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:11
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B24/00; C04B24/04; C04B24/06; Y; Y10; Y10S; Y10S106/00; Y10S106/01
Claims Analysis
Total Claims: 53
Claim 1
Independent Claim
198 words
A cement composition consisting essentially of: cement, a pozzolan material, fine aggregate, air, water, at least one alkali metal constituent selected from the group consisting of sodium, potassium, and lithium ions, and at least one iron complexing anionic constituent which is capable of forming complexes with ferric ions, is soluble in water, and forms a calcium salt which is also water soluble; the alkali metal constituent being present in an amount up to approximately 4.0 percent by weight, in terms of the equivalent weight of sodium ions, of the pozzolan material; the iron complexing anionic constituent being present in an amount up to approximately 6.0 percent by weight, in terms of the equivalent weight of chloride ions, of the pozzolan material; and the cement composition being further characterized by: (a) having a solid volume ratio of cement to the pozzolan material within the range of approximately 0.05 to 2.0; (b) having a ratio of the volume of paste (pozzolan material, cement, air, and water) to the solid volume of sand within the range of approximately 0.75 to 2.5; and (c) having a ratio of the solid volume of cement to the volume of mortar less than about 0.19.
Claim 2
Dependent Claim
198 words
A cement composition consisting essentially of: cement, a pozzolan material, fine aggregate, air, water, at least one alkali metal constituent selected from the group consisting of sodium, potassium, and lithium ions, and at least one iron complexing anionic constituent which is capable of forming complexes with ferric ions, is soluble in water, and forms a calcium salt which is also water soluble; the alkali metal constituent being present in an amount up to approximately 4.0 percent by weight, in terms of the equivalent weight of sodium ions, of the pozzolan material; the iron complexing anionic constituent being present in an amount up to approximately 6.0 percent by weight, in terms of the equivalent weight of chloride ions, of the pozzolan material; and the cement composition being further characterized by: (a) having a solid volume ratio of cement to the pozzolan material within the range of approximately 0.05 to 2.0; (b) having a ratio of the volume of paste (pozzolan material, cement, air, and water) to the solid volume of sand within the range of approximately 0.75 to 2.5; and (c) having a ratio of the solid volume of cement to the volume of mortar less than about 0.19.
Claim 3
Dependent Claim
13 words
The cement composition of claim 1 wherein the pozzolan material comprises fly ash.
Claim 4
Dependent Claim
12 words
The cement composition of claim 1 and further consisting of coarse aggregate.
Claim 5
Dependent Claim
13 words
The cement composition of claim 3 wherein the pozzolan material comprises fly ash.
Claim 6
Dependent Claim
15 words
The cement composition of claim 1 and further consisting of at least one chemical admix.
Claim 7
Dependent Claim
12 words
The cement composition of claim 5 and further consisting of coarse aggregate.
Claim 8
Dependent Claim
13 words
The cement composition of claim 6 wherein the pozzolan material comprises fly ash.
Claim 9
Dependent Claim
64 words
The cement composition of claim 1 and further consisting of at least one additional anion selected from the group consisting of thiosulfate, sulfate, sulfite, nitrate, and salicylate anions and wherein the total amount of such additional ions and said iron complexing anionic constituent constitute up to approximately 6.0 percent by weight, in terms of the equivalent weight of chloride ions, of the pozzolan material.
Claim 10
Dependent Claim
12 words
The cement composition of claim 8 and further consisting of coarse aggregate.
Claim 11
Dependent Claim
13 words
The cement composition of claim 9 wherein the pozzolan material comprises fly ash.
Claim 12
Dependent Claim
15 words
The cement composition of claim 10 and further consisting of at least one chemical admix.
Claim 13
Dependent Claim
36 words
The cement composition of claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or 11 and further consisting of extraneous lime in an amount less than 4.0 percent by weight of the pozzolan material.
Claim 14
Dependent Claim
49 words
The cement composition of claim 12 wherein: the solid volume ratio of cement to the pozzolan material is within the range of approximately 0.1 to 2.0; and the ratio of the volume of paste to the solid volume of sand is within the range of approximately 1.0 to 2.0.
Claim 15
Dependent Claim
80 words
The cement composition of claim 13 wherein the alkali metal constituent is present in an amount within the range of approximately 0.2 to 1.6 percent by weight in terms of the equivalent weight of sodium ions, of the fly ash, and the total iron complexing anionic constituent and any additional anion are present in an amount within the range of approximately 0.1 to 2.4 percent by weight, in terms of the equivalent weight of chloride ions, of the pozzolan material.
Claim 16
Dependent Claim
15 words
The cement composition of claim 14 wherein the alkali metal ion constituent comprises sodium ions.
Claim 17
Dependent Claim
14 words
The cement composition of claim 14 wherein the alkali metal constituent comprises potassium ions.
Claim 18
Dependent Claim
14 words
The cement composition of claim 13 wherein the alkali metal constituent comprises lithium ions.
Claim 19
Dependent Claim
185 words
A cement composition comprising cement, a pozzolan material, fine aggregate, air, water, and at least one alkali metal constituent selected from the group consisting of sodium, potassium, and lithium ions and at least one anionic constituent selected from the group consisting of chloride, bromide, nitrite, thiocyanate, cyanide, and lactate ions wherein: the alkali metal constituent is present in an amount up to approximately 4.0 percent by weight, in terms of the equivalent weight of sodium ions, of the pozzolan material; the anionic constituent is present in an amount up to approximately 6.0 percent by weight, in terms of the equivalent weight of chloride ions, of the pozzolan material; and the cement composition is further characterized by: (a) having a solid volume ratio of cement to the pozzolan material within the range of approximately 0.05 to 2.0; (b) having a ratio of the volume of paste (pozzolan material, cement, air, and water) to the solid volume of sand within the range of approximately 0.75 to 2.5; and (c) having a ratio of the solid volume of cement to the volume of mortar less than about 0.19.
Claim 20
Dependent Claim
185 words
A cement composition comprising cement, a pozzolan material, fine aggregate, air, water, and at least one alkali metal constituent selected from the group consisting of sodium, potassium, and lithium ions and at least one anionic constituent selected from the group consisting of chloride, bromide, nitrite, thiocyanate, cyanide, and lactate ions wherein: the alkali metal constituent is present in an amount up to approximately 4.0 percent by weight, in terms of the equivalent weight of sodium ions, of the pozzolan material; the anionic constituent is present in an amount up to approximately 6.0 percent by weight, in terms of the equivalent weight of chloride ions, of the pozzolan material; and the cement composition is further characterized by: (a) having a solid volume ratio of cement to the pozzolan material within the range of approximately 0.05 to 2.0; (b) having a ratio of the volume of paste (pozzolan material, cement, air, and water) to the solid volume of sand within the range of approximately 0.75 to 2.5; and (c) having a ratio of the solid volume of cement to the volume of mortar less than about 0.19.
Claim 21
Dependent Claim
13 words
The cement composition of claim 18 wherein the pozzolan material comprises fly ash.
Claim 22
Dependent Claim
12 words
The cement composition of claim 18 and further consisting of coarse aggregate.
Claim 23
Dependent Claim
13 words
The cement composition of claim 20 wherein the pozzolan material comprises fly ash.
Claim 24
Dependent Claim
15 words
The cement composition of claim 18 and further consisting of at least one chemical admix.
Claim 25
Dependent Claim
12 words
The cement composition of claim 22 and further consisting of coarse aggregate.
Claim 26
Dependent Claim
13 words
The cement composition of claim 23 wherein the pozzolan material comprises fly ash.
Claim 27
Dependent Claim
61 words
The cement composition of claim 18 and further consisting of at least one additional anion selected from the group consisting of thiosulfate, sulfate, sulfite, nitrate and salicylate anions and wherein the total amount of such ions and iron complexing anions constitutes up to approximately 6.0 percent by weight, in terms of the equivalent weight of chloride ions, of the pozzolan material.
Claim 28
Dependent Claim
12 words
The cement composition of claim 25 and further consisting of coarse aggregate.
Claim 29
Dependent Claim
13 words
The cement composition of claim 26 wherein the pozzolan material comprises fly ash.
Claim 30
Dependent Claim
15 words
The cement composition of claim 27 and further consisting of at least one chemical admix.
Claim 31
Dependent Claim
36 words
The cement composition of claim 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, or 28 and further consisting of extraneous lime in an amount less than 4.0 percent by weight of the pozzolan material.
Claim 32
Dependent Claim
49 words
The cement composition of claim 29 wherein: the solid volume ratio of cement to the pozzolan material is within the range of approximately 0.1 to 2.0; and the ratio of the volume of paste to the solid volume of sand is within the range of approximately 1.0 to 2.0.
Claim 33
Dependent Claim
77 words
The cement composition of claim 30 wherein the alkali metal constitute is present in an amount within the range of approximately 0.2 to 1.6 percent by weight in terms of the equivalent weight of sodium ions, of the fly ash, and the anionic constituent and any additional anion are present in an amount within the range of approximately 0.1 to 2.4 percent by weight, in terms of the equivalent weight of chloride ions, of the pozzolan material.
Claim 34
Dependent Claim
14 words
The cement composition of claim 31 wherein the alkali metal constituent comprises sodium ions.
Claim 35
Dependent Claim
14 words
The cement composition of claim 31 wherein the alkali metal constituent comprises lithium ions.
Claim 36
Dependent Claim
14 words
The cement composition of claim 31 wherein the alkali metal constituent comprises potassium ions.
Claim 37
Dependent Claim
21 words
The cement composition of claim 31 wherein the alkali metal and anionic constituents are provided in the form of sea water.
Claim 38
Dependent Claim
107 words
A cement composition consisting essentially of: cement, a pozzolan material, fine aggregate, water, and calcium chloride; the calcium chloride being present in an amount comprising approximately 0.5 to 4.0 percent by weight of the pozzolan material; and the cement composition being further characterized by: (a) having a solid volume ratio of cement to the pozzolan material within the range of approximately 0.05 to 2.0; (b) having a ratio of the volume of paste to the solid volume of sand within the range of approximately 0.75 to 2.5; and (c) having a ratio of the solid volume of cement to the volume of mortar less than about 0.19.
Claim 39
Dependent Claim
107 words
A cement composition consisting essentially of: cement, a pozzolan material, fine aggregate, water, and calcium chloride; the calcium chloride being present in an amount comprising approximately 0.5 to 4.0 percent by weight of the pozzolan material; and the cement composition being further characterized by: (a) having a solid volume ratio of cement to the pozzolan material within the range of approximately 0.05 to 2.0; (b) having a ratio of the volume of paste to the solid volume of sand within the range of approximately 0.75 to 2.5; and (c) having a ratio of the solid volume of cement to the volume of mortar less than about 0.19.
Claim 40
Dependent Claim
13 words
The cement composition of claim 36 wherein the pozzolan material comprises fly ash.
Claim 41
Dependent Claim
12 words
The cement composition of claim 36 and further consisting of coarse aggregate.
Claim 42
Dependent Claim
13 words
The cement composition of claim 38 wherein the pozzolan material comprises fly ash.
Claim 43
Dependent Claim
15 words
The cement composition of claim 36 and further consisting of at least one chemical admix.
Claim 44
Dependent Claim
12 words
The cement composition of claim 40 and further consisting of coarse aggregate.
Claim 45
Dependent Claim
13 words
The cement composition of claim 41 wherein the pozzolan material comprises fly ash.
Claim 46
Dependent Claim
27 words
The cement composition of claim 36 and further consisting of at least one alkali metal ion selected from the group consisting of sodium, potassium, and lithium ions.
Claim 47
Dependent Claim
65 words
The cement composition of claim 43 and further consisting of at least one additional anion selected from the group consisting of bromide, nitrite, thiocyanate, cyanide lactate, thiosulfate, sulfate, sulfite, nitrate, and salicylate anions and wherein the total amount of such ions and chloride ions comprises up to approximately 6.0 percent by weight, in terms of the equivalent weight of chloride ions, of the pozzolan material.
Claim 48
Dependent Claim
12 words
The cement composition of claim 44 and further consisting of coarse aggregate.
Claim 49
Dependent Claim
13 words
The cement composition of claim 45 wherein the pozzolan material comprises fly ash.
Claim 50
Dependent Claim
15 words
The cement composition of claim 46 and further consisting of at least one chemical admix.
Claim 51
Dependent Claim
37 words
The cement composition of claim 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, or 47 and further consisting of extraneous lime in an amount less than 4.0 percent by weight of the pozzolan material.
Claim 52
Dependent Claim
49 words
The cement composition of claim 48 wherein: the solid volume ratio of cement to the pozzolan material is within the range of approximately 0.1 to 2.0; and the ratio of the volume of paste to the solid volume of sand is within the range of approximately 1.0 to 2.0.
Claim 53
Dependent Claim
43 words
The cement composition of claim 49 wherein the chloride ions and any anionic constituent are present in an amount within the range of approximately 0.1 to 2.4 percent by weight, in terms of the equivalent weight of chloride ions, of the pozzolan material.
References Cited (Backward Citations)
US2752261A
Cited
US2785988A
Cited
US3663287A
Cited
US3854968A
Cited
US3832196A
Cited
US3870535A
Cited
US3765920A
Cited
US3827895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-16 | 1984-09-15 | 1985-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-16 | 1988-09-15 | 1989-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-16 | 1992-09-15 | 1993-03-17 | $7700.00 | Window Closed / Lapsed |