EP0356066A2
Expired / Lapsed
EP
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Improved material for bridge joints and for use in, and method of, repairing or surfacing roads and the like
Assignee: Prismo Ltd
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Filing: 1989-08-09
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Granted: —
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Expires: 2009-08-09
Abstract
Abstract A material for repairing roads and other areas comprises a bituminous binder, in most instances rubberised bitumen, which may be mixed with aggregate and chopped glass or other fibres. Rubber chips are bound by the binder and comprise substantially sized pieces of rubber having a dimension of at least 2 mm. Also bound in the binder are sections of metal wire or fibre. Suitably the rubber chips and metal reinforcement may be obtained by chopping up old metal reinforced vehicle tyres. This gives an appropriate proportion of metal to rubber. The material may be used for bridge or other expansion joints or for patching cracked areas, particularly in and around concrete joints, for subsequent treatment with an overlay, the resilient rubberised bitumen being load bearing and having sufficient tensile strength that reflective cracks are not transmitted to the overlay from underlying concrete having a large coefficient of thermal expansion. Also, the material may be used as a membrane layer covering a base layer or surface. Such a layer may be formed by spreading the binder, possibly also with the addition of strengthening glass fibres, distributing the rubber chips and metal over the binder, and rolling to consolidate.
Inventors
- 👤 James Mcintosh
- 👤 Ronald James Goodenough
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 13:32
CPC Classifications
E; E01; E01C; E01C7/00; E01C7/08; E01C7/35; E01C7/353; E01C11/00; E01C11/005; E01C11/02; E01C11/04; E01C11/12; E01C11/16; E01C11/165; E01C7/18; E01C7/26; E01C7/265; E01C7/358; E01D; E01D19/00; E01D19/06; E01D19/067
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
77 words
A material for use in repairing or servicing roads, parking areas, aircraft pavements and other load bearing areas, such material comprising rubber chips and a bituminous binder characterised in that the chips have a maximum dimension of at least 2 mm and mixed with the chips are lengths of metal fibre or wire longer than the maximum dimension of the chips, said rubber chips and lengths of metal fibre or wire being bound together with the binder.
Claim 2
Dependent Claim
77 words
A material for use in repairing or servicing roads, parking areas, aircraft pavements and other load bearing areas, such material comprising rubber chips and a bituminous binder characterised in that the chips have a maximum dimension of at least 2 mm and mixed with the chips are lengths of metal fibre or wire longer than the maximum dimension of the chips, said rubber chips and lengths of metal fibre or wire being bound together with the binder.
Claim 3
Dependent Claim
40 words
A material according to claim 1, wherein the rubber chips are bound together with rubberised bitumen or a bitumen emulsion as the bituminous binder, the bitumen of the emulsion or of the rubberised bitumen preferably being a polymer modified bitumen.
Claim 4
Dependent Claim
20 words
A material according to claim 2, wherein the bituminous binder is rubberised bitumen material which includes 5 to 25% rubber.
Claim 5
Dependent Claim
18 words
A material according to any preceding claim, wherein the metal fibres are approximately 20 to 30 mm long.
Claim 6
Dependent Claim
24 words
A material according to any preceding claim, which also comprises up to 5%, preferably 0.5 to 1.5%, by weight of glass or other fibres.
Claim 7
Dependent Claim
27 words
A material according to any preceding claim, wherein the rubber chips have their maximum dimensions in the range of 3 to 7 mm, preferably about 5 mm.
Claim 8
Dependent Claim
33 words
A material according to any preceding claim, wherein the bituminous binder has aggregate mixed therewith, the aggregate being no larger than 25 mm and preferably no larger than 5 mm in maximum dimension.
Claim 9
Dependent Claim
18 words
A material according to claim 6, wherein the aggregate has dimensions similar to that of the rubber chips.
Claim 10
Independent Claim
35 words
A method of repairing or surfacing roads, parking areas, aircraft pavements and other load bearing areas in which a hot material is applied to the area, such material being as claimed in any preceding claim.
Claim 11
Dependent Claim
19 words
A method according to claim 9, wherein the material is applied to localised damaged portions only of the area.
Claim 12
Dependent Claim
20 words
A method according to claim 9, wherein the material is applied as a continuous membrane layer over the whole area.
Claim 13
Dependent Claim
21 words
A method according to claim 10 or 11, wherein the area has sequentially applied to it a covering traffic bearing overlay.
Claim 14
Independent Claim
36 words
A method of providing a bridge joint or expansion joint wherein material as claimed in any one of claims 1 to 6 is applied to a groove spanning the joint in the bridge or other structure.
Claim 15
Dependent Claim
16 words
A method according to claim 13, wherein the material is applied hot and rolled in situ.
Claim 16
Dependent Claim
31 words
A method according to claim 13, wherein the material is applied as a preformed strip into the groove, the groove having been cut to the required size to receive the strip.
Claim 17
Independent Claim
24 words
A method according to any one of claims 13 to 15, wherein the rubber chips have a maximum dimension of up to 20 mm.
Claim 18
Independent Claim
39 words
A method according to any one of claims 13 to 16, wherein a traffic bearing surface layer is provided over the material of the joint and over the structure on either side thereof in which the groove is formed.
Claim 19
Dependent Claim
29 words
A method according to claim 12 or 17, wherein said surface layer is applied as a mixture of said bituminous binder material, rubber chips and metal fibre or wire.
Claim 20
Dependent Claim
58 words
A method according to claim 12 or 17, wherein the surface layer is applied by spreading a layer of bituminous binder material over the filled groove and neighbouring surface, distributing a mixture of rubber chips and metal fibre or wire over the binder material and rolling the chips and metal into the binder material to be bound thereby.
Claim 21
Dependent Claim
27 words
A method according to claim 19, wherein the bituminous binder material itself has rubber chips and metal fibre or wire mixed therein before application to the area.
Claim 22
Dependent Claim
30 words
A method according to claim 19 or 20, wherein aggregate is added by being distributed over the bituminous binder material and rolled thereinto together with the rubber chips and metal.
Claim 23
Dependent Claim
23 words
A method according to claim 12 or 17, wherein the surface layer is a black top overlay of at least 30 mm thickness.
Claim 24
Dependent Claim
33 words
A method according to claim 12 or 17, wherein the surface overlay comprises a bituminous layer strengthened with glass or other fibres and provided with a surface layer of chippings or the like.
Claim 25
Dependent Claim
40 words
A material according to any one of claims 1 to 8, or a method of any one of claims 9 to 23, wherein the rubber chips and metal fibres or wire have been obtained by chopping up wire-reinforced vehicle tyres.
References Cited (Backward Citations)
No citation records indexed.
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