US3650784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aggregate containing a treatment agent for improving concrete properties
Assignee: JOHN H HOGE
•
Filing: 1970-08-11
•
Granted: 1972-03-21
•
Expires: 1990-08-11
Abstract
Abstract The internal capillary and pore spaces of porous lightweight aggregate are filled with a solution or suspension of a treating agent capable of improving at least one physical property of concrete. When this treated aggregate is used in the conventional manner in mixing and placing concrete, a treating agent remains absorbed within the aggregate and does not emerge to react or deposit in the concrete matrix until the moist curing, normally given to concrete, is terminated and the cast begins to dry. The treating agent is thus uniformly released throughout the interior of the cast at any time that is selected as optimum in the cement crystallization cycle for the particular property improvement sought in contrast to the relatively shallow penetration achieved by externally wetting the cast with such agents as in present art. A variety of organic and inorganic agents, many not heretofore usable by the conventional methods, can be incorporated in concrete to improve physical properties such as compressive, tensile and flexural strength, impermeability, freeze/thaw resistance and the like. Agents that would be rendered ineffective if introduced during mixing or in the early stages of hydration can now be utilized by this novel process.
Inventors
- 👤 Robert J Albert
- 👤 John H Hoge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:03
CPC Classifications
C; C04; C04B; C04B20/00; C04B20/10
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
36 words
A method in accordance with the method of Claim 1 wherein said aggregate is utilized in said concrete mix by mixing therewith and said concrete mix coMprises cement, sand and mixing water along with said aggregate.
Claim 2
Dependent Claim
26 words
A method in accordance with the method of claim 2 wherein said concrete mix further comprises a second treating agent reactive with said first-mentioned treating agent.
Claim 3
Dependent Claim
36 words
A method in accordance with the method of claim 2 wherein said filling of said interior spaces is carried out by replacing gases in said interior spaces by surrounding said porous lightweight aggregate with said liquid.
Claim 4
Dependent Claim
23 words
A method in accordance with the method of claim 4 wherein said replacing is carried out by exposing said aggregate to a vacuum.
Claim 5
Dependent Claim
15 words
A method in accordance with the method of claim 2 wherein said liquid is water.
Claim 6
Dependent Claim
30 words
A method in accordance with the method of claim 5 wherein said treating agent is selected from the group consisting of metal salts of silicates, carbonates, bicarbonates, chlorides and sulfates.
Claim 7
Dependent Claim
18 words
A method in accordance with the method of claim 5 wherein said treating agent is an organic material.
Claim 8
Dependent Claim
22 words
A method in accordance with the method of claim 5 wherein said treating agent is a metallic silicate soluble in said liquid.
Claim 9
Dependent Claim
22 words
A method in accordance with the method of claim 5 wherein said treating agent is a metallic carbonate soluble in said liquid.
Claim 10
Dependent Claim
22 words
A method in accordance with the method of claim 5 wherein said treating agent is a metallic bicarbonate soluble in said liquid.
Claim 11
Dependent Claim
18 words
A method in accordance with the method of claim 5 wherein said treating agent is a metallic chloride.
Claim 12
Dependent Claim
22 words
A method in accordance with the method of claim 5 wherein said treating agent is a metallic sulfate soluble in said liquid.
Claim 13
Dependent Claim
21 words
A method in accordance with the method of claim 2 wherein said treating agent is in a solution with said liquid.
Claim 14
Independent Claim
97 words
A method for improving a physical property of concrete, said method comprising, wetting a porous lightweight aggregate with a liquid so as to fill interior spaces in said porous lightweight aggregate and said liquid carrying a treating agent for improving a physical property of concrete, mixing the resulting lightweight aggregate in a concrete mix comprising sand, cement and mixing water, casting and curing said concrete mix, and permitting said concrete to dry to cause said liquid and treating agent to pass out of said interior spaces of said porous lightweight aggregate whereby said physical property is enhanced.
Claim 15
Dependent Claim
34 words
A porous lightweight aggregate for use in concrete, said porous aggregate having a plurality of internal spaces, said spaces being filled with a liquid carrying a treating agent for improving physical properties of concrete.
Claim 16
Dependent Claim
14 words
A porous lightweight aggregate in accordance with claim 16 wherein said liquid is water.
Claim 17
Dependent Claim
29 words
A porous lightweight aggregate in accordance with claim 17 wherein said treating agent is selected from the group consisting of metal salts of silicates, carbonates, bicarbonates, chlorides and sulfates.
Claim 18
Dependent Claim
17 words
A porous lightweight aggregate in accordance with claim 17 wherein said treating agent is an organic material.
Claim 19
Dependent Claim
18 words
A method in accordance with the method of claim 4 wherein said treating agent is an organic material.
Claim 20
Dependent Claim
22 words
A method in accordance with the method of claim 4 wherein said treating agent is a metallic silicate soluble in said liquid.
Claim 21
Dependent Claim
22 words
A method in accordance with the method of claim 4 wherein said treating agent is a metallic carbonate soluble in said liquid.
Claim 22
Dependent Claim
22 words
A method in accordance with the method of claim 4 wherein said treating agent is a metallic bicarbonate soluble in said liquid.
Claim 23
Dependent Claim
18 words
A method in accordance with the method of claim 4 wherein said treating agent is a metallic chloride.
Claim 24
Dependent Claim
22 words
A method in accordance with the method of claim 4 wherein said treating agent is a metallic sulfate soluble in said liquid.
Claim 25
Dependent Claim
21 words
A porous lightweight aggregate in accordance with claim 16 wherein said treating agent is a metallic silicate soluble in said liquid.
Claim 26
Dependent Claim
21 words
A porous lightweight aggregate in accOrdance with claim 16 wherein said treating agent is a metallic carbonate soluble in said liquid.
Claim 27
Dependent Claim
21 words
A porous lightweight aggregate in accordance with claim 16 wherein said treating agent is a metallic bicarbonate soluble in said liquid.
Claim 28
Dependent Claim
17 words
A porous lightweight aggregate in accordance with claim 16 wherein said treating agent is a metallic chloride.
Claim 29
Dependent Claim
21 words
A porous lightweight aggregate in accordance with claim 16 wherein said treating agent is a metallic sulfate soluble in said liquid.
Claim 30
Dependent Claim
38 words
A method in accordance with the method of claim 4 wherein said porous lightweight aggregate is heated to temperatures of from 350* to 600* F. and is then surrounded by said liquid whereby said interior spaces are filled.
References Cited (Backward Citations)
US26545A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-21 | 1975-09-20 | 1976-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-21 | 1979-09-20 | 1980-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-21 | 1983-09-20 | 1984-03-21 | $7700.00 | Window Closed / Lapsed |