US4058405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pumpable cement grout and additive
Assignee: Grout Supply Co
•
Filing: 1976-07-09
•
Granted: 1977-11-15
•
Expires: 1996-07-09
Abstract
Abstract A pumpable cement grout or mortar is described having improved early compressive strength, controllable set times, and desirable expansion properties which consist essentially of cement, sand, sodium chloride, aluminum powder and water. The grout or mortar also may contain one or more dispersing agents, thickeners, and an inert filler. It has been found that the workability of cement grout or mortar compositions containing the above ingredients does not depend necessarily upon the amount of water only as in prior art cements, and the cements of the invention exhibit reduced segregation, bleeding and shrinking tendencies resulting in higher strengths and increased durability. A process for preparing the cement compositions of the invention also is described.
Inventors
- 👤 Joseph T. Snyder
- 👤 Richard E. Huffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:55
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B28/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
50 words
A pumpable cement grout or mortar having improved early compressive strength consisting essentially of 100 parts by weight of cement, from about 100 to 300 parts of sand, from about one to five parts by weight of sodium chloride, from about 0.006 to 0.03 parts of aluminum powder, and water.
Claim 2
Dependent Claim
50 words
A pumpable cement grout or mortar having improved early compressive strength consisting essentially of 100 parts by weight of cement, from about 100 to 300 parts of sand, from about one to five parts by weight of sodium chloride, from about 0.006 to 0.03 parts of aluminum powder, and water.
Claim 3
Dependent Claim
28 words
The mortar of claim 1 wherein the mortar also contains up to about 1 part of a solid filler and up to about 0.05 parts of a thickener.
Claim 4
Dependent Claim
24 words
The mortar of claim 1 containing from about 40 to about 70 parts of water and from about 0.5 parts of a dispersing agent.
Claim 5
Dependent Claim
16 words
The mortar of claim 3 wherein the dispersing agent is a salt of a lignosulfonic acid.
Claim 6
Dependent Claim
90 words
A pumpable mortar having improved early compressive strength consisting essentially of 100 parts by weight of cement, from about 100 to 300 parts by weight of sand, from about 1 to 5 parts by weight of sodium chloride, from about 0.006 to about 0.03 parts of aluminum powder, from about 40 to 60 parts by weight of water, from about zero to 1 part by weight of solid filler, from about zero to about 0.5 parts of a thickener and from about zero to about 0.5 parts of a thickener.
Claim 7
Dependent Claim
90 words
A pumpable mortar having improved early compressive strength consisting essentially of 100 parts by weight of cement, from about 100 to 300 parts by weight of sand, from about 1 to 5 parts by weight of sodium chloride, from about 0.006 to about 0.03 parts of aluminum powder, from about 40 to 60 parts by weight of water, from about zero to 1 part by weight of solid filler, from about zero to about 0.5 parts of a thickener and from about zero to about 0.5 parts of a thickener.
Claim 8
Dependent Claim
22 words
The mortar of claim 5 wherein the thickener is methyl cellulose and the dispersing agent is a salt of a lignosulfonic acid.
Claim 9
Independent Claim
126 words
A method of preparing a pumpable mortar having improved early compressive strength comprising the steps of a. preparing a first mixture comprising about 100 parts of cement, from about 100 to 300 parts of sand, from about 40 to 70 parts of water, b. preparing a second mixture comprising sodium chloride, aluminum powder, solid filler, a thickener and a dispersing agent, and c. adding said second mixture to the first mixture to provide a mortar containing, per 100 parts of cement, from about 1 to 5 parts of sodium chloride, from about 0.006 to about 0.03 parts of aluminum powder, up to about 1 part of solid filler, up to about 0.05 parts of the thickener and up to about 0.5 parts of the dispersing agent.
Claim 10
Independent Claim
126 words
A method of preparing a pumpable mortar having improved early compressive strength comprising the steps of a. preparing a first mixture comprising about 100 parts of cement, from about 100 to 300 parts of sand, from about 40 to 70 parts of water, b. preparing a second mixture comprising sodium chloride, aluminum powder, solid filler, a thickener and a dispersing agent, and c. adding said second mixture to the first mixture to provide a mortar containing, per 100 parts of cement, from about 1 to 5 parts of sodium chloride, from about 0.006 to about 0.03 parts of aluminum powder, up to about 1 part of solid filler, up to about 0.05 parts of the thickener and up to about 0.5 parts of the dispersing agent.
Claim 11
Dependent Claim
65 words
An additive composition for improving the initial compressive strength of pumpable mortars consisting essentially of from about 0.5 to about five parts of sodium chloride, from about 0.006 to about 0.012 parts of aluminum powder, from about 0.001 to about 0.05 parts of a thickener, from about 0.05 to about 0.1 parts of a dispersing agent, and 0.01 to about 0.5 parts of limestone powder.
Claim 12
Dependent Claim
65 words
An additive composition for improving the initial compressive strength of pumpable mortars consisting essentially of from about 0.5 to about five parts of sodium chloride, from about 0.006 to about 0.012 parts of aluminum powder, from about 0.001 to about 0.05 parts of a thickener, from about 0.05 to about 0.1 parts of a dispersing agent, and 0.01 to about 0.5 parts of limestone powder.
References Cited (Backward Citations)
US3762937A
Cited
US3972723A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-14 | 1981-05-16 | 1981-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-14 | 1985-05-16 | 1985-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-14 | 1989-05-16 | 1989-11-15 | $7700.00 | Window Closed / Lapsed |