US4282036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flowable concrete mixture
Assignee: Walter Bau AG
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Filing: 1979-10-19
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Granted: 1981-08-04
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Expires: 1999-10-19
Abstract
Abstract A flowable concrete mixture which possesses high strength and which provides facile placement of the mixture in structural forms composed of cement glue and aggregates, the viscosity of the cement glue and volume weight of the aggregates being adjusted so that the aggregates are suspended in the cement glue and remain suspended until the cement glue hardens.
Inventors
- 👤 Ulrich Finsterwalder
- 👤 Klemens Finsterwalder
- 👤 Kurt Koch
- 👤 Hans Puls
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:58
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91; Y10; Y10S; Y10S106/00; Y10S106/01
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
136 words
In a concrete mixture for the production of steel reinforcing concrete or prestressed concrete suitable for use as water-tight floating bodies made of steel and concrete wherein cement glue composed of a mixture of cement and water is used to fill the hollow spaces between the pieces of a particulate aggregate and hold said aggregate together, the improvement consisting essentially of the volume of cement glue being larger than the volume required to fill the hollow spaces between the particulate aggregate alone and the viscosity of the cement glue, the particle size and the volume/weight ratio of the aggregate being adjusted so that the aggregate particles are suspended in the cement glue and remain suspended until the cement glue hardens and wherein the cement glue contains pozzolana as a filler for the formation of a matrix.
Claim 2
Dependent Claim
136 words
In a concrete mixture for the production of steel reinforcing concrete or prestressed concrete suitable for use as water-tight floating bodies made of steel and concrete wherein cement glue composed of a mixture of cement and water is used to fill the hollow spaces between the pieces of a particulate aggregate and hold said aggregate together, the improvement consisting essentially of the volume of cement glue being larger than the volume required to fill the hollow spaces between the particulate aggregate alone and the viscosity of the cement glue, the particle size and the volume/weight ratio of the aggregate being adjusted so that the aggregate particles are suspended in the cement glue and remain suspended until the cement glue hardens and wherein the cement glue contains pozzolana as a filler for the formation of a matrix.
Claim 3
Dependent Claim
15 words
The concrete mixture of claim 1 wherein the fine pozzolana particles have a round shape.
Claim 4
Dependent Claim
22 words
The concrete mixture of claim 1 wherein the pozzolana are selected from the group consisting of fly ash, trass and limestone powder.
Claim 5
Dependent Claim
21 words
The concrete mixture of claim 1 wherein aggregates are selected from the group consisting of sand, expanded shale, and expanded clay.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-03 | 1985-02-02 | 1985-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-03 | 1989-02-02 | 1989-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-03 | 1993-02-02 | 1993-08-04 | $7700.00 | Window Closed / Lapsed |