RU143147U1 - WATERPROOF TAPE - Google Patents

Abstract

Waterproofing road tape containing bitumen, characterized in that it is modified with rubber and additional fillers in the following ratio of components,%: bitumen 50-75, rubber 5-11, filler - the rest.

Description

A useful model is a waterproofing road tape (hereinafter referred to as the tape) relates to the field of construction and maintenance of roads with asphalt and asphalt concrete pavement, in particular to preventive maintenance and making junctions between strips of laid asphalt or asphalt and concrete structures, for example, curbs or light poles .

Water forms in the cracks of the damaged pavement, which adversely affects the condition of the pavement. The main factor involved in the destruction of asphalt and asphalt concrete pavement is water. In the autumn-spring period, when temperatures change from negative to positive and vice versa, water, filling cracks freezes and, expanding, increases cracks. When the ice melts, the enlarged cracks are again filled with water, and when freezing, the process described above occurs, increasing the size of the cracks. In the future, cracks can increase so much that vehicles passing through them destroy the edges of the asphalt sections that have lost their integrity, and thus increase the cracks to the size of the pits.

Cracks also form at the junction of various asphalt surfaces with each other and with elements made of other materials, such as concrete curbs or metal light poles. At the junction points there are gaps that are not visible to the human eye, but sufficient for water to penetrate, resulting in the destruction of the asphalt surface.

A known method of repairing a crack on a road with an asphalt concrete coating, in which cracks up to 5 mm wide are cleaned of dust and dirt, smeared with a hard brush with liquid bitumen SG-15/25 or tar D1, and then filled with bitumen SG-130/200, MG-130 / 200, BND-200/300, heated to operating temperature, or with bituminous mastic with the appropriate consistency, heated to 160-170 ° C (pr. Chumakova Yu.L. et al., Roads, part 2, M .: Transport, 1967, p. 177).

Also known is the repair of road asphalt pavements according to the Chernopyatov method (Patent for invention RU 2267571 C2, published January 10, 2006), in which a crack that appears 1-10 mm wide is poured with liquid oil selected from the group: used motor oil, fuel oil, liquefied bitumen , raw oil.

The disadvantage of these methods is the rather high complexity of the work performed; the use of machines for heating bitumen and the use of workers for unloading and loading operations of sufficiently heavy tanks

with liquids to fill cracks; transport is needed for the delivery of sand or gravel, special containers with holes and tubes, these methods can not be used in winter.

Also known is a road docking waterproofing tape containing liquid bitumen, which is modified by a polymer, as well as an additional filler, and brought to the state of a solid elastic material ("BRIT-A Docking Bitumen-Polymer Tape. Specifications. LLC" NOVA-Brit ", STO 77310225.001-2009, Moscow, 2009. It is taken as the closest analogue. From the description of the BRIT-A tape it follows that the tapes are made of a polymer-bitumen binder compatible with all brands of hot mixtures and adapted to those traditionally used in P The technology of the device of asphalt concrete coatings. The disadvantage of the technology of the device of coatings using connecting tapes is that the sealing occurs during the laying and compaction of the hot asphalt mixture. The sealing effect is achieved by melting the material of the tape under the influence of the high temperature of the mixture. Thus, the tape performs the function similar to a hot bitumen mixture, which gave a more solid form.

The objective of the utility model is to simplify and reduce the cost of repairing cracks on roads with asphalt and asphalt concrete pavement, increasing the life of newly laid and repaired road surfaces and areas with asphalt and asphalt concrete pavement.

The technical result - the use of fillers in the tape provides the tape with additional fibers that prevent the tape from melting, and ensure that the asphalt mix adjoins the elastic surface. When compacting asphalt pavements, a protruding section of the tape is rolled out at the junction, thereby clogging the junction on the surface of the finished coating from surface water and moisture entering it.

The essence of solving the technical problem lies in the fact that a self-adhesive in the cold state waterproofing tape is used, containing bitumen modified with rubber and an additional component of a mixture of cellulose and cement (asbestos) in the following ratio of components:

Bitumen 50-75%

Rubber 5-11%

Cellulose 14-20%

Cement (asbestos) 10-17%

Example. Component ratio options:

1. Bitumen 58%, rubber 9%, cellulose 18%, cement 15%.

2. Bitumen 60%, rubber 11%, cellulose 19%, cement 10%.

 The use of the tape is as follows. The crack is cleared of dust. A special self-adhesive in the cold state bitumen tape is laid on the crack, which is pressed against the surface of the road surface. Further actions are performed by passing vehicles, which with their mass begin to press the middle part of the tape into the crack, and the edges of the tape into the structure of the asphalt pavement, thereby filling the crack, eliminates the ingress of surface water into it. The use of the tape at the joints and junctions when installing new asphalt concrete pavements allows us to form not only a compensating seam between the two surfaces, but also to seal the seam from the outside of the laid coatings.

The application of this tape is also expanding for use at the junction of the strips laid asphalt, with each other and with concrete or metal structures (borders, light poles). Due to the fact that concrete (metal) and asphalt have different coefficients of thermal expansion, as well as due to the fact that between asphalt and concrete (metal) there is no full adhesion to each other, and at the junction points there are gaps that are not visible to human To the eye, but sufficient for water to penetrate, the same processes occur as when water gets into asphalt cracks, which leads to the destruction of the coating along the entire length of the junction. When laying asphalt, placing a bitumen tape between the asphalt and the side surface of the concrete structure, we compensate for the aforementioned drawback by forming a compensating seam, leveling various physical and technical features of the contacting surfaces, moreover, the part of the tape protruding above the surface of the laid asphalt eventually forms a mushroom shape, further protecting against moisture.

The application of the tape is illustrated by the following drawings:

In FIG. 1 and 2 show an asphalt pavement 1 with a crack formed in it and a tape 2 applied to the crack (in FIG. 1) and in FIG. 2 - tape after rolling by road. In FIG. 3-5 shows the use of tapes for making junctions of asphalt and concrete structure. In FIG. 3, the tape 2 is laid to a concrete base, for example a curb 1, with the designation of the expected level 3 of the asphalt coating after laying and rolling with a roller; in FIG. 4 shows the level of backfill of the asphalt pavement 1 before tamping; in FIG. 5 shows the tape 1 after rolling the asphalt and the level of asphalt 2 after rolling the roller.

Using tape provides the following benefits:

- The service life of asphalt concrete pavement of roads is extended;

- eliminates the need for frequent use of heavy road equipment;

- ease of logistics tape;

- a significant reduction in labor intensity;

- reduction of accident rate, delivery time of goods and passengers.

Claims (1)

Waterproofing road tape containing bitumen, characterized in that it is modified with rubber and additional fillers in the following ratio of components,%: bitumen 50-75, rubber 5-11, filler - the rest.