GB2142355A

GB2142355A - Paving surface

Info

Publication number: GB2142355A
Application number: GB08317898A
Authority: GB
Inventors: John Sidney Baylis; Richard Anthony Lake
Original assignee: Individual
Current assignee: Individual
Priority date: 1983-07-01
Filing date: 1983-07-01
Publication date: 1985-01-16
Also published as: GB8317898D0; GB2142355B

Abstract

A tile for using in applying a paving surface to a substrate such as a bridge deck comprises an anti-skid wearing course and a waterproof membrane such as epoxy resin or coal tar pitch. The tile may be formed from a solvent free coal tar pitch epoxy slurry which is dressed with a non-slip aggregate when in the fluid state and subsequently cured. The tile may be backed with a cork underlay. The tile is fixed to the substrate by a suitable adhesive and the underside of the tile may be abraded to improve adhesion.

Description

SPECIFICATION Paving The present invention relates to paving surfaces. When applying a paving surface to a bridge it is often desirable to minimise the weight of the applied surfacing material by using a surface coating only a few millimetres thick, typically 5mm, on the bridge deck. This is generally applied by a spreading technique e.g. by trowelling or with a hand roller. A drawback of this technique is that the road or pavement area being covered is out of action for as long as a day, whilst the dressing cures, causing considerable disruption of traffic.

The present invention provides a tile of antiskid wearing course and waterproof membrane.

Preferably, the tiles are approximately 5mm thick and a few feet square, preferably 600 mm square.

The tiles may incorporate a cork underlay a few millimetres thick. The underlay may extend beyond the membrane at the edges of the tile.

A substrate such as a bridge deck may be surfaced by adhering the tiles thereto with adhesive. By appropriate choice of adhesive, the surface may be ready for use a few hours after tiling.

It is anticipated that by interposing adhesive between the substrate and the tile the substrate surface preparation requirements become considerably less stringent than for the prior art technique.

The invention will be further described by way of example.

A tile is made from a solvent free coal tar pitch epoxy slurry which, when in a fluid state, is dressed with a non slip aggregate.

The slurry consists of a combination of three components: (1) Coal tar pitch with a catalyst (2) An epoxy resin (3) Graded mineral fillers The dressing aggregates can vary according to the non-slip requirements, examples are calcined bauxite, alumina rich natural aggregates, basalt, calcined flints and silica sands.

The tile is formed in a mould. Firstly, the three basic components are thoroughly mixed and the homogenous slurry, pre-measured, is poured into the mould. The mould is then vibrated so that the slurry levels out to a uniform thickness of approximately 4mm. The selected anti-skid aggregate is then broadcast on to the surface of the fluid slurry until saturation point is reached.

The system is then allowed to cure, or force cured through the application of heat, whereupon the surplus dressing aggregate is removed for re-use.

The underside of the tile is preferably abraided, e.g. mechanically, to provide improved adhesion to the substrate.

A cork rubber base may be incorporated under the system described above so that two types. of tile are available.

The second type of tile, a "backed" system, is for use in applications where a cork rubber underlay will be beneficial.

During application both types of tile are preferably heated to make them pliable and allow them to follow any irregularities in the substrate. The heating of the tile will generally have a beneficial action as far as adhesives are concerned.

The type of adhesive used will depend on the area of use of tiles and the time available for completing a paving operation. For example, surfacing drilling rigs will require a high flash point adhesive. A thin layer of adhesive between the tile and the substrate may be preferable to avoid shearing of the adhesive, but it may be preferable to seal between tiles with a hot pour material or heavy bodied adhesive, the tiles being spaced e.g. 4 to 5 mm apart.

At present, a preferred formulation of the three component basis of the system is available. as Cicol Et produced by HIM-Chemie B.V. of Holland. A suitable cork rubber backing is available from C s I Supplies Limited and is known under the trade name of Treadmaster.

1. A tile comprising an anti-skid wearing course and water-proof membrane.

2. A tile as claimed in claim 1 having a cork underlay or backing.

3. A tile as claimed in claim 2 wherein the cork underlay extends beyond the membrane at the edges of the tile.

4. A tile as claimed in claim 1, 2 or 3 comprising a membrane formed from coal tar pitch, epoxy resin and graded mineral fillers, dressed with a non-slip aggregate.

5. A tile as claimed in claim 4, wherein the aggregate is selected from calcined bauxite, alumina rich natural aggregates, basalt, calcined flints and silica sands.

6. A process for the production of a tile, comprising dressing a solvent free coal tar pitch epoxy slurry with a non-slip aggregate.

7. A process as claimed in claim 6, wherein the slurry is formed from coal tar pitch with a catalyst, epoxy resin and graded mineral fillers.

8. A process as claimed in claim 6 or 7 wherein the slurry is poured into a mould, vibrated to a substantially uniform thickness and an anti-skid aggregate is then broadcast onto the surface of the slurry.

9. A process as claimed in any one of claims 5 to 8 wherein the underside of the tile is abraded.

1 0. A method of applying a paving surface, comprising adhering to a substrate a

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Paving The present invention relates to paving surfaces. When applying a paving surface to a bridge it is often desirable to minimise the weight of the applied surfacing material by using a surface coating only a few millimetres thick, typically 5mm, on the bridge deck. This is generally applied by a spreading technique e.g. by trowelling or with a hand roller. A drawback of this technique is that the road or pavement area being covered is out of action for as long as a day, whilst the dressing cures, causing considerable disruption of traffic. The present invention provides a tile of antiskid wearing course and waterproof membrane. Preferably, the tiles are approximately 5mm thick and a few feet square, preferably 600 mm square. The tiles may incorporate a cork underlay a few millimetres thick. The underlay may extend beyond the membrane at the edges of the tile. A substrate such as a bridge deck may be surfaced by adhering the tiles thereto with adhesive. By appropriate choice of adhesive, the surface may be ready for use a few hours after tiling. It is anticipated that by interposing adhesive between the substrate and the tile the substrate surface preparation requirements become considerably less stringent than for the prior art technique. The invention will be further described by way of example. A tile is made from a solvent free coal tar pitch epoxy slurry which, when in a fluid state, is dressed with a non slip aggregate. The slurry consists of a combination of three components: (1) Coal tar pitch with a catalyst (2) An epoxy resin (3) Graded mineral fillers The dressing aggregates can vary according to the non-slip requirements, examples are calcined bauxite, alumina rich natural aggregates, basalt, calcined flints and silica sands. The tile is formed in a mould. Firstly, the three basic components are thoroughly mixed and the homogenous slurry, pre-measured, is poured into the mould. The mould is then vibrated so that the slurry levels out to a uniform thickness of approximately 4mm. The selected anti-skid aggregate is then broadcast on to the surface of the fluid slurry until saturation point is reached. The system is then allowed to cure, or force cured through the application of heat, whereupon the surplus dressing aggregate is removed for re-use. The underside of the tile is preferably abraided, e.g. mechanically, to provide improved adhesion to the substrate. A cork rubber base may be incorporated under the system described above so that two types. of tile are available. The second type of tile, a "backed" system, is for use in applications where a cork rubber underlay will be beneficial. During application both types of tile are preferably heated to make them pliable and allow them to follow any irregularities in the substrate. The heating of the tile will generally have a beneficial action as far as adhesives are concerned. The type of adhesive used will depend on the area of use of tiles and the time available for completing a paving operation. For example, surfacing drilling rigs will require a high flash point adhesive. A thin layer of adhesive between the tile and the substrate may be preferable to avoid shearing of the adhesive, but it may be preferable to seal between tiles with a hot pour material or heavy bodied adhesive, the tiles being spaced e.g. 4 to 5 mm apart. At present, a preferred formulation of the three component basis of the system is available. as Cicol Et produced by HIM-Chemie B.V. of Holland. A suitable cork rubber backing is available from C s I Supplies Limited and is known under the trade name of Treadmaster. CLAIMS

1. A tile comprising an anti-skid wearing course and water-proof membrane.

2. A tile as claimed in claim 1 having a cork underlay or backing.

1 0. A method of applying a paving surface, comprising adhering to a substrate a plurality of tiles as defined in any one of claims 1 to 5.

11. A tile substantially as hereinbefore described with reference to the foregoing example.

1 2. A process for the production of a tile substantially as hereinbefore described with reference to the foregoing example.