Patent US4617219A successfully refreshed from Google Patents.
US4617219A
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US
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Three dimensionally reinforced fabric concrete
Assignee: FRCC RESEARCH LLC
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Filing: 1984-12-24
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Granted: 1986-10-14
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Expires: 2004-12-24
Abstract
Abstract Reinforced cement structures are provided which are reinforced in three dimensions and comprise at least one nonwoven spatial fabric reinforcing material encapsulated in a cementitious composition which preferably has controlled water bleed characteristics. The cementitious composition comprises, for example, hydraulic cement, a gelling agent, water and optionally a dispersing agent. The nonwoven fabric reinforcing material can extend substantially throughout the whole of the cement structure. Alternatively, a plurality of reinforcing layers can be utilized in a sandwich or composite type structure in which the various reinforcing layers are separated by a layer of cementitious composition. The nonwoven fabric reinforcing material can also have, on at least one of its surfaces, a woven or non-woven scrim reinforcing material to impart additional strength properties to the structure. The structures can take the form of panels which can be cold formed into curved structures. The structures can also take the form of load-bearing structures suitable for use as roadbeds, in bridge construction and the like.
Inventors
- 👤 Morris Schupack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:32
CPC Classifications
B; B32; B32B; B32B13/00; B32B13/14; B32B1/00; C; C04; C04B; C04B28/00; C04B28/02; E; E04; E04C; E04C2/00; E04C2/02; E04C2/04; E04C2/06; E04C2/30; E04C2/32; E04C2/328; E04C5/00; E04C5/07; B32B2305/00; B32B2305/08; B32B2419/00; B32B2607/00; C04B2111/00; C04B2111/00474; C04B2111/00612; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24124; Y10T428/249921; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/159; Y10T442/184; Y10T442/197
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
32 words
A three-dimensionally reinforced hydraulic cementitious structure comprising at least one layer of non-woven spatial fabric reinforcing material comprised of randomly oriented substantially continuous fibers, said material being encapsulated in the cementitious composition.
Claim 2
Dependent Claim
32 words
A three-dimensionally reinforced hydraulic cementitious structure comprising at least one layer of non-woven spatial fabric reinforcing material comprised of randomly oriented substantially continuous fibers, said material being encapsulated in the cementitious composition.
Claim 3
Dependent Claim
37 words
A structure according to claim 1 wherein said cementitious composition comprises cement, water and at least one gelling agent, said gelling agent being present in proportions sufficient to impart low water bleed characteristics to said cementitious composition.
Claim 4
Dependent Claim
43 words
A structure according to claim 2 wherein said cementitious composition also comprises at least one dispersing agent in a proportion such that the combined effect of the gelling and dispersing agents is sufficient to impart low water bleed characteristics to said cementitious composition.
Claim 5
Dependent Claim
16 words
A structure according to claim 1 wherein a plurality of nonwoven fabric reinforcing layers are present.
Claim 6
Dependent Claim
27 words
A structure according to claim 4 wherein the non-woven spatial fabric reinforcing layers are separated from each other by layers of cementitious composition forming a sandwich structure.
Claim 7
Dependent Claim
21 words
A structure according to claim 1 wherein said nonwoven spatial fabric reinforcing layer extends throughout substantially the whole of said structure.
Claim 8
Dependent Claim
29 words
A structure according to claim 1 wherein said nonwoven spatial fabric reinforcing layer is provided with a scrim fabric reinforcing layer on at least one of its outer surfaces.
Claim 9
Dependent Claim
61 words
A structure according to claim 3 wherein said cementitious composition further comprises at least one member selected from the group consisting of air entraining agents, air entrapping agents and prefoamed material in an amount sufficient to render said structure up to 70 percent cellular by volume and to impart thereto a density in the range of about 30 to 120 pcf.
Claim 10
Dependent Claim
14 words
A structure according to claim 1 wherein the cementitious composition also comprises an aggregate.
Claim 11
Dependent Claim
13 words
A structure according to claim 9 wherein said aggregate is a lightweight aggregate.
Claim 12
Dependent Claim
39 words
A structure according to claim 1 wherein the nonwoven spatial fabric reinforcing layer comprises a fleece fabric in which the individual fibers are essentially continuous and randomly oriented and are held in place by bonding at points of intersection.
Claim 13
Dependent Claim
52 words
A reinforced structural panel, capable of being converted by bending into a curved structural member without substantial loss of structural strength, comprising: a nonwoven spatial fabric reinforcing material in which the individual fibers are essentially continuous and randomly oriented; said material being disposed substantially uniformly throughout a matrix of a cementitious composition.
Claim 14
Dependent Claim
52 words
A reinforced structural panel, capable of being converted by bending into a curved structural member without substantial loss of structural strength, comprising: a nonwoven spatial fabric reinforcing material in which the individual fibers are essentially continuous and randomly oriented; said material being disposed substantially uniformly throughout a matrix of a cementitious composition.
Claim 15
Dependent Claim
41 words
A reinforced structural panel according to claim 12 wherein said cementitious composition comprises cement, water, an aggregate, and at least one gelling agent, the latter agent being present in proportions sufficient to impart low water bleed characteristics to said cementitious composition.
Claim 16
Dependent Claim
29 words
A reinforced structural panel according to claim 12 wherein said nonwoven spatial fabric is provided with a scrim fabric reinforcing layer on at least one of its outer surfaces.
Claim 17
Dependent Claim
29 words
A reinforced structural panel according to claim 12 wherein said cementitious composition is a cellular hydraulic cement having a density in the range of about 30 to 120 pcf.
Claim 18
Dependent Claim
45 words
A reinforced structural panel according to claim 13 wherein said cementitious composition also comprises at least one dispersing agent in a proportion such that the combined effect of the gelling and dispersing agents is sufficient to impart low water bleed characteristics to said cementitious composition.
Claim 19
Dependent Claim
32 words
A reinforced structural panel according to claim 16 wherein said gelling and dispersing agents are each present in said cementitious composition in the range of 0.05 percent to 1.5 percent by weight.
Claim 20
Dependent Claim
46 words
A load-bearing, substantially planar cementitious structure reinforced in all three dimensions and comprising: at least one continuous nonwoven spatial fabric reinforcing material in which the individual fibers are essentially continuous and randomly oriented; said fabric reinforcing material being encapsulated in a matrix of a cementitious composition.
Claim 21
Dependent Claim
46 words
A load-bearing, substantially planar cementitious structure reinforced in all three dimensions and comprising: at least one continuous nonwoven spatial fabric reinforcing material in which the individual fibers are essentially continuous and randomly oriented; said fabric reinforcing material being encapsulated in a matrix of a cementitious composition.
Claim 22
Dependent Claim
43 words
A load-bearing structure according to claim 18 wherein said cementitious composition comprises a hydraulic cement, water, an aggregate, and at least one gelling agent, the latter agent being present in a proportion sufficient to impart low water bleed characteristics to said cementitious composition.
Claim 23
Dependent Claim
30 words
A load-bearing structure according to claim 18 wherein said continuous nonwoven fabric reinforcing material is provided with a scrim fabric reinforcing material on at least one of its outer surfaces.
Claim 24
Dependent Claim
19 words
A load bearing structure according to claim 18 wherein said fabric reinforcing material is distributed uniformly throughout said structure.
Claim 25
Dependent Claim
44 words
A load-bearing structure according to claim 19 wherein said cementitious composition also comprises at least one dispersing agent in a proportion such that the combined effect of the gelling and dispersing agents is sufficient to impart low water bleed characteristics to said cementitious composition.
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) | 1989-10-13 | 1990-04-14 | 1990-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-13 | 1994-04-14 | 1994-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-13 | 1998-04-14 | 1998-10-14 | $7700.00 | Window Closed / Lapsed |