(19) |
 |
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(11) |
EP 0 356 066 A3 |
(12) |
EUROPEAN PATENT APPLICATION |
(88) |
Date of publication A3: |
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24.10.1990 Bulletin 1990/43 |
(43) |
Date of publication A2: |
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28.02.1990 Bulletin 1990/09 |
(22) |
Date of filing: 09.08.1989 |
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(84) |
Designated Contracting States: |
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AT BE CH DE ES FR IT LI LU NL |
(30) |
Priority: |
26.08.1988 GB 8820329 28.12.1988 GB 8830290
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(71) |
Applicant: FIBRESCREED LIMITED |
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Uckfield
East Sussex TN22 1QL (GB) |
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(72) |
Inventors: |
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- McIntosh, James
East Sussex (GB)
- Goodenough, Ronald James
Nr Haywards Heath
East Sussex (GB)
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(74) |
Representative: Williams, Trevor John (GB) et al |
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J.A. Kemp & Co.
14 South Square, Gray's Inn GB-London WC1R 5EU GB-London WC1R 5EU (GB) |
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(54) |
Improved material for bridge joints and for use in, and method of, repairing or surfacing
roads and the like |
(57) 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.
