US4333765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sandless concrete
Assignee: Individual
•
Filing: 1980-08-08
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Granted: 1982-06-08
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Expires: 2000-08-08
Abstract
Abstract A cementitious material is formed without the necessity of sand or fresh water by sizing coarse aggregate with silicon dioxide in salt water and mixing the sized aggregate with cement. Fresh water is not required, and the conventional fine aggregate component (typically sand) can be omitted. This material can be formed using a minimal amount of water resulting in a high-strength, light weight, cementitious material comprising a plurality of sized aggregate elements positioned contiguous to one another at a plurality of points and defining spaces in between. The aggregate elements are bonded together at the points of contiguity into a rigid coherent body.
Inventors
- 👤 Arthur Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:25
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B20/00; C04B20/10; C04B20/1055; C04B22/00; C04B22/002; C04B22/0026
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
103 words
A method of making sandless cementitious material comprising the steps of: forming an aqueous suspension of silicon dioxide of 100 mesh or finer; sizing an aggregate in said aqueous suspension, said aggregate being predominantly comprised of aggregate elements having a size in the range between 0.05 and 3 inches, each cubic yard of said aggregate being sized with 10 to 35 pounds of silicon dioxide in 10 to 25 gallons of water; adding between 150 and 600 pounds of cement to each cubic yard of said sized aggregate in said suspension; and permitting the mixture of water, sized aggregate and cement to cure.
Claim 2
Independent Claim
103 words
A method of making sandless cementitious material comprising the steps of: forming an aqueous suspension of silicon dioxide of 100 mesh or finer; sizing an aggregate in said aqueous suspension, said aggregate being predominantly comprised of aggregate elements having a size in the range between 0.05 and 3 inches, each cubic yard of said aggregate being sized with 10 to 35 pounds of silicon dioxide in 10 to 25 gallons of water; adding between 150 and 600 pounds of cement to each cubic yard of said sized aggregate in said suspension; and permitting the mixture of water, sized aggregate and cement to cure.
Claim 3
Dependent Claim
15 words
The method according to claim 1 wherein said aqueous suspension is formed in salt water.
Claim 4
Dependent Claim
14 words
The method according to claim 1 wherein said aqueous is formed in sea water.
Claim 5
Dependent Claim
14 words
The sandless cementitious material made by the processes of claim 1, 2 or 3.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-07 | 1985-12-07 | 1986-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-07 | 1989-12-07 | 1990-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-07 | 1993-12-07 | 1994-06-08 | $7700.00 | Window Closed / Lapsed |