US4052220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making an improved concrete
Assignee: Partners Ltd
•
Filing: 1975-09-10
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Granted: 1977-10-04
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Expires: 1995-09-10
Abstract
Abstract A method for preparing an improved concrete wherein a chemical admix is slurried with water and a pozzolan material prior to its incorporation in the concrete. This method reduces the slump loss of the concrete during transportation, and increases its workability in the form at the point of use without any sacrifice in strength.
Inventors
- 👤 Raymond C. Turpin, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:51
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
104 words
A process for the preparation of ready-mix concrete comprising the following ingredients, water, cement, fine aggregate, a pozzolan material, and a chemical admix selected from the group consisting of derivatives of lignosulfonic acid and its salts and polymer derivatives of sugar, comprising: preparing a pozzolan-admix slurry comprising a substantial portion of said chemical admix, pozzolan material, and water; mixing said pozzolan-admix slurry for a period of time between five seconds and one minute; adding said pozzolan-admix slurry to a mixture comprising one or more of the ingredients of said ready-mix concrete; adding the remaining ingredients of said ready-mix concrete; and mixing said ready-mix concrete.
Claim 2
Dependent Claim
104 words
A process for the preparation of ready-mix concrete comprising the following ingredients, water, cement, fine aggregate, a pozzolan material, and a chemical admix selected from the group consisting of derivatives of lignosulfonic acid and its salts and polymer derivatives of sugar, comprising: preparing a pozzolan-admix slurry comprising a substantial portion of said chemical admix, pozzolan material, and water; mixing said pozzolan-admix slurry for a period of time between five seconds and one minute; adding said pozzolan-admix slurry to a mixture comprising one or more of the ingredients of said ready-mix concrete; adding the remaining ingredients of said ready-mix concrete; and mixing said ready-mix concrete.
Claim 3
Dependent Claim
120 words
A process for the preparation of ready-mix concrete comprising the following ingredients, water, cement, fine aggregate, a pozzolan material, and a chemical admix selected from the group consisting of derivatives of lignosulfonic acid and its salts and polymer derivatives of sugar, comprising: preparing a mixture comprising cement and water; adding a slurry of pozzolan material and water to said mixture comprising cement and water; adding a substantial portion of said chemical admix to said slurry of pozzolan material and water to form a pozzolan-admix slurry; mixing sai pozzolan-admix slurry for a period of time between five seconds and one minute; adding the remaining ingredients of said ready-mix concrete to said mixture comprising cement and water; and mixing said ready-mix concrete.
Claim 4
Dependent Claim
120 words
A process for the preparation of ready-mix concrete comprising the following ingredients, water, cement, fine aggregate, a pozzolan material, and a chemical admix selected from the group consisting of derivatives of lignosulfonic acid and its salts and polymer derivatives of sugar, comprising: preparing a mixture comprising cement and water; adding a slurry of pozzolan material and water to said mixture comprising cement and water; adding a substantial portion of said chemical admix to said slurry of pozzolan material and water to form a pozzolan-admix slurry; mixing sai pozzolan-admix slurry for a period of time between five seconds and one minute; adding the remaining ingredients of said ready-mix concrete to said mixture comprising cement and water; and mixing said ready-mix concrete.
Claim 5
Dependent Claim
96 words
A process for the preparation of ready-mix concrete comprising the following ingredients, water, cement, fine aggregate, a pozzolan material, and a chemical admix selected from the group consisting of derivatives of lignosulfonic acid and its salts and polymer derivates of sugar, the improvement comprising: preparing a pozzolan-admix slurry comprising a substantial proportion of said chemical admix, pozzolan material, and water; mixing said pozzolan-admix slurry for a period of time between five seconds and one minute; and subsequently adding said pozzolan-admix slurry to a mixture comprising one or more of the other ingredients of said ready-mix concrete.
Claim 6
Dependent Claim
96 words
A process for the preparation of ready-mix concrete comprising the following ingredients, water, cement, fine aggregate, a pozzolan material, and a chemical admix selected from the group consisting of derivatives of lignosulfonic acid and its salts and polymer derivates of sugar, the improvement comprising: preparing a pozzolan-admix slurry comprising a substantial proportion of said chemical admix, pozzolan material, and water; mixing said pozzolan-admix slurry for a period of time between five seconds and one minute; and subsequently adding said pozzolan-admix slurry to a mixture comprising one or more of the other ingredients of said ready-mix concrete.
Claim 7
Dependent Claim
28 words
The process of claim 1 wherein said pozzolan-admix slurry is formed by slurrying said pozzolan material in water and subsequently adding a substantial proportion of said chemical admix.
Claim 8
Dependent Claim
12 words
The process of claim 1 wherein said pozzolan material is fly ash.
Claim 9
Dependent Claim
25 words
The process of claim 1 wherein said pozzolan material is fly ash and said chemical admix comprises a derivative of lignosulfonic acid or its salts.
Claim 10
Dependent Claim
22 words
The process of claim 1 wherein said pozzolan material is fly ash and said chemical admix comprises a polymer derivative of sugar.
Claim 11
Dependent Claim
13 words
The process of claim 1 wherein said pozzolan-admix slurry also comprises calcium chloride.
Claim 12
Dependent Claim
13 words
The process of claim 6 wherein said pozzolan-admix slurry also comprises calcium chloride.
Claim 13
Dependent Claim
12 words
The process of claim 1 wherein said pozzolan material is fly ash.
Claim 14
Dependent Claim
25 words
The process of claim 2 whereinn said pozzolan material is fly ash and said chemical admix comprises a derivative of lignosulfonic acid or its salts.
Claim 15
Dependent Claim
22 words
The process of claim 2 wherein said pozzolan material is fly ash and said chemical admix comprises a polymer derivative of sugar.
Claim 16
Dependent Claim
13 words
The process of claim 2 wherein said pozzolan-admix slurry also comprises calcium chloride.
Claim 17
Dependent Claim
13 words
The process of claim 11 wherein said pozzolan-admix slurry also comprises calcium chloride.
Claim 18
Dependent Claim
28 words
The process of claim 3 wherein said pozzolan-admix slurry is formed by slurrying said pozzolan material in water and subsequently adding a substantial proportion of said chemical admix.
Claim 19
Dependent Claim
12 words
The process of claim 3 wherein said pozzolan material is fly ash.
Claim 20
Dependent Claim
25 words
The process of claim 3 wherein said pozzolan material is fly ash and said chemical admix comprises a derivative of lignosulfonic acid or its salts.
Claim 21
Dependent Claim
22 words
The process of claim 3 wherein said pozzolan material is fly ash and said chemical admix comprises a polymer derivative of sugar.
Claim 22
Dependent Claim
13 words
The process of claim 3 wherein said pozzolan-admix slurry also comprises calcium chloride.
Claim 23
Dependent Claim
13 words
The process of claim 17 wherein said pozzolan-admix slurry also comprises calcium chloride.
References Cited (Backward Citations)
US3486917A
Cited
US3723145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-03 | 1981-04-04 | 1981-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-03 | 1985-04-04 | 1985-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-03 | 1989-04-04 | 1989-10-04 | $7700.00 | Window Closed / Lapsed |