US3857715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusile hydraulic cement compositions containing alkali and carbohydrate
Assignee: HUMPHREY ELMA B SURVIVING SPOUSE OF CLYDE W HUMPHREY DEC'D
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Filing: 1972-03-01
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Granted: 1974-12-31
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Expires: 1992-03-01
Abstract
Abstract A hydraulic cement-containing product is made from a hydraulic cement admixture containing a low concentration of water by employing a hydraulic cement admixture prepared by homogeneously admixing into a dry mix of a hydraulic cement and aggregate, first, an aqueous solution of a water-soluble alkali compound, such as ammonium hydroxide, and then a water-soluble carbohydrate, such as molasses, and water sufficient to provide an admixture that is cohesive and plastic. Because of the low water content of the hydraulic cement admixture, products made therefrom have good ultimate properties and can be made by an extrusion process in addition to the conventional molding process.
Inventors
- 👤 C Humphrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:43
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
20 words
A METHOD FOR PRODUCING A CURED HYDRAULIC CEMENTCONTAINING PRODUCT WHICH COMPRISES: A. ADMIXING INTO A MIX CONTAINING A HYDRAULIC CEMENT,
Claim 2
Independent Claim
20 words
A METHOD FOR PRODUCING A CURED HYDRAULIC CEMENTCONTAINING PRODUCT WHICH COMPRISES: A. ADMIXING INTO A MIX CONTAINING A HYDRAULIC CEMENT,
Claim 3
Dependent Claim
34 words
FIRST, AN AQUEOUS SOLUTION OF A WATER-SOLUBLE ALKALI COMPOUND SELECTED FROM THE CLASS CONSISTING OF A SODIUM COMPOUND, POTASSIUM COMPOUND, AND NITROGEN COMPOUND THAT HAS A 0.1NPH IN WATER OF 11.0 OR GREATER, AND
Claim 4
Dependent Claim
34 words
FIRST, AN AQUEOUS SOLUTION OF A WATER-SOLUBLE ALKALI COMPOUND SELECTED FROM THE CLASS CONSISTING OF A SODIUM COMPOUND, POTASSIUM COMPOUND, AND NITROGEN COMPOUND THAT HAS A 0.1NPH IN WATER OF 11.0 OR GREATER, AND
Claim 5
Dependent Claim
62 words
THEN, WATER-SOLUBLE CARBOHYDRATE AND WATER IN QUANTITIES SUFFICIENT TO PROVIDE AN ADMIXTURE THAT IS COHESIVE AND CAN BE FORMED INTO A PRODUCT, THE QUANTITY OF SAID WATER-SOLUBLE CARBOHYDRATE BEING AT LAST ABOUT 1 PART PER 100 PARTS OF THE HYDRAULIC CEMENT; B. FORMING THE ADMIXTURE INTO THE PRODUCT BY AN EXTRUSION PROCESS; AND C. CONDITIONING THE PRODUCT UNTIL THE ADMIXTURE IS CURED.
Claim 6
Dependent Claim
62 words
THEN, WATER-SOLUBLE CARBOHYDRATE AND WATER IN QUANTITIES SUFFICIENT TO PROVIDE AN ADMIXTURE THAT IS COHESIVE AND CAN BE FORMED INTO A PRODUCT, THE QUANTITY OF SAID WATER-SOLUBLE CARBOHYDRATE BEING AT LAST ABOUT 1 PART PER 100 PARTS OF THE HYDRAULIC CEMENT; B. FORMING THE ADMIXTURE INTO THE PRODUCT BY AN EXTRUSION PROCESS; AND C. CONDITIONING THE PRODUCT UNTIL THE ADMIXTURE IS CURED.
Claim 7
Dependent Claim
62 words
then, water-soluble carbohydrate and water in quantities sufficient to provide an admixture that is cohesive and can be formed into a product, the quantity of said water-soluble carbohydrate being at least about 1 part per 100 parts of the hydraulic cement; B. forming the admixture into the product by an extrusion process; and C. conditioning the product until the admixture is cured.
Claim 8
Dependent Claim
62 words
then, water-soluble carbohydrate and water in quantities sufficient to provide an admixture that is cohesive and can be formed into a product, the quantity of said water-soluble carbohydrate being at least about 1 part per 100 parts of the hydraulic cement; B. forming the admixture into the product by an extrusion process; and C. conditioning the product until the admixture is cured.
Claim 9
Dependent Claim
19 words
The method of claim 1 wherein the alkali compound is potassium hydroxide, sodium hydroxide, ammonium hydroxide or mixtures thereof.
Claim 10
Dependent Claim
16 words
The method of claim 1 wherein the carbohydrate is a sugar, a starch, or mixtures thereof.
Claim 11
Dependent Claim
29 words
The method of claim 3 wherein the carbohydrate is added as an aqueous solution and the solution contains a surfactant that reduces the surface tension of the carbohydrate solution.
Claim 12
Dependent Claim
18 words
The method of claim 1 wherein the carbohydrate is a sugar and the alkali compound is ammonium hydroxide.
Claim 13
Dependent Claim
17 words
The method of claim 1 wherein the carbohydrate is molasses and the alkali compound is ammonium hydroxide.
Claim 14
Dependent Claim
19 words
The method of claim 6 wherein the molasses contains a surfactant that reduces the surface tension of the molasses.
Claim 15
Dependent Claim
30 words
The method of claim 7 wherein the molasses is used in a quantity that supplies at least about 1.0 parts of sugar solids per 100 parts of the hydraulic cement.
Claim 16
Dependent Claim
11 words
The method of claim 1 wherein the carbohydrate is a starch.
Claim 17
Dependent Claim
11 words
The method of claim 1 wherein the carbohydrate is a sugar.
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) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |