Patent US2919037A successfully refreshed from Google Patents.
Patent US3932051A successfully refreshed from Google Patents.
US3932051A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Highway construction
Assignee: Sumaspcae Ltd
•
Filing: 1974-09-03
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Granted: 1976-01-13
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Expires: 1994-09-03
Abstract
Abstract The load bearing capacities of carriageways or pavements of both flexible and rigid design are increased and failure thereof is, to a large degree, obviated by incorporating therein a sub-surface or surface layer of alkali-resistant glass fibre-reinforced cement.
Inventors
- 👤 Michael Cleary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:32
CPC Classifications
E; E01; E01C; E01C5/00; E01C5/06; E01C5/08; E01C11/00; E01C11/005; E01C11/16; E01C11/18; E01C19/00; E01C19/12; E01C19/18; E01C19/182; E01C7/00; E01C7/08; E01C7/10; E01C7/14; E01C7/142; E01C7/32; E01C7/35; E01C7/351
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
29 words
A method of constructing, repairing or strengthening a highway or other load-bearing pavement which includes the step of incorporating therein a layer comprising an alkali-resistant glass fibre-reinforced Portland cement.
Claim 2
Independent Claim
29 words
A method of constructing, repairing or strengthening a highway or other load-bearing pavement which includes the step of incorporating therein a layer comprising an alkali-resistant glass fibre-reinforced Portland cement.
Claim 3
Dependent Claim
19 words
A method according to claim 1, wherein said layer is formed by spraying onto the substructure of the pavement.
Claim 4
Dependent Claim
28 words
A method according to claim 1, wherein said layer is preformed and secured by a bonding agent at any level on or in a prepared surface or indentation.
Claim 5
Dependent Claim
23 words
A method according to claim 1, wherein said layer is subsequently covered by a wearing surface of hot-rolled asphalt or resin bound material.
Claim 6
Dependent Claim
70 words
A method according to claim 1, of repairing a highway pavement of flexible design which has been widened after construction, comprising applying said layer to the surface of said pavement at and in the region of the junction between the original pavement and those parts added during the widening thereof and subsequently covering the whole surface of the widened pavement with a wearing surface of hot-rolled asphalt or resin-bound material.
Claim 7
Dependent Claim
53 words
A method according to claim 1 of repairing a highway pavement of rigid design, wherein a non-adhesive mastic-backed sheet of aluminium foil or similar slip-surface material is interposed between said layer and the substructure of the pavement at and in the region of each lateral joint between sections of the longitudinally extending pavement.
Claim 8
Dependent Claim
14 words
A method according to claim 1, wherein said cement layer contains a pozzolanic material.
Claim 9
Dependent Claim
23 words
A method according to claim 1, wherein said layer is composed of 5% alkali-resistant glass fibre, 55% Portland cement and 40% pozzolanic material.
Claim 10
Dependent Claim
16 words
A method according to claim 8, wherein said alkali-resistant glass fibre is employed in 50mm. lengths.
Claim 11
Dependent Claim
20 words
A method according to claim 8, wherein said pozzolanic material is selected from pulverised fuel ash and china clay waste.
Claim 12
Dependent Claim
15 words
A highway or other load-bearing pavement incorporating a layer containing alkali-resistant glass fibre-reinforced Portland cement.
Claim 13
Dependent Claim
15 words
A highway or other load-bearing pavement incorporating a layer containing alkali-resistant glass fibre-reinforced Portland cement.
Claim 14
Dependent Claim
15 words
The pavement defined in claim 11 wherein said cement layer contains a distributed pozzolanic material.
References Cited (Backward Citations)
US3557671A
Cited
US3819291A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-12 | 1979-07-14 | 1980-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-12 | 1983-07-14 | 1984-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-12 | 1987-07-14 | 1988-01-13 | $7700.00 | Window Closed / Lapsed |