CS230425B1 - Antifreeze paving tiles,cs antifreeze paving tiles - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to antifreeze tiles intended to form road surfaces, in particular pavements, car parks, parking areas, storage or operating areas exposed to weathering, and the like, made from a mixture with a binder based on plastics.

Removal of icing.and snow from roads is usually carried out mechanically by a cell manually using tools, or mechanically by plowing, scraping, sweeping, etc. ·, all with little effect ·

Spraying with a solution of chemicals with wetting properties or sprinkling with these chemicals, sometimes with an admixture of a substance with anti-skid properties, eg sharp-edged sand, is therefore used to facilitate the work. In rare cases, heavily frequented sidewalks are heated, most often by electric energy, more rarely by a pipe system with water heated by waste heat or by means of solar batteries, ie in a way demanding in terms of investment and operation. Tiles with a chemical anti-icing agent are not yet produced.

These deficiencies are eliminated by a frost-resistant tile made of a mixture of aggregates, stone meal and binder, which consists of 6 to 20 wt. % binder of polyolefin based plastics, for example amorphous polypropylene and 15 to 32 wt. % of a chemical antifreeze agent, for example crystalline sodium chloride, grain size up to 4 mm. The tile may also contain 0.02 to 5 wt. % dye.

The main advantage of the paddle tile of the invention is that it may contain amorphous polypropylene which is practically a waste material and the cheapest available chemical with humectant properties - industrial sodium chloride. Even with the grinding of the surface of the tile, the sodium chloride crystals are activated, in winter they act

- 2 230 425 permanently to prevent ice and snow from freezing, making it easier to clear them, and in the summer months they collect dust particles due to their moisturizing effect. This avoids the preventive and subsequent spreading of chemicals and / or anti-slip properties, which leads to considerable savings in labor and associated resources. Pedestrian footwear is not exposed to excessive salts and a reduction in the amount of chemicals used, especially sodium chloride, leads to the recovery of surface and groundwater. A significant advantage is also that the tile creates. due to its composition compact seamless unit. The tile may also contain a colorant. It is then suitable, for example, for horizontal marking on roads or for similar purposes, or as a decorative element. Because it is compactly colored, road markings do not abrade, do not need to be renewed, thereby eliminating the relevant traffic locks, and do not form a slippery surface causing injury.

Example 1

The sidewalk 36 m long and 3 m wide was made of tiles with antifreeze properties made in dimensions 30x30x3,5 cm. The tiles were made from a hot mix containing 18 wt% amorphous polypropylene, 23 wt% aggregate up to 4 mm, 16 wt% aggregate 4 to 8 mm, 15 milled limestone and 28 wt% sodium chloride, up to 4 wt. 4 mm. The tiles were laid in a sand bed and formed a compact seamless surface. The pavement was constantly monitored throughout the winter. Frost never formed on it, and the snowfall could easily be cleaned off with a standard wooden hand scraper, behind which the pavement surface remained completely clean, only damp and dried over other pavements, so that the scratched sodium chloride residue crystallized again and formed a layer as a preventive spray of his solution.

Example 2

On the roadway, a pedestrian crossing, the so-called zebra, was marked with anti-freeze tiles made hot from the mixture

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230 42 $ wt% amorphous polypropylene, 35 wt% aggregate up to 4 mm, 15 wt% aggregate 4 to 8 mm, 20% ground limestone, 1? hm. % calcium chloride with a grain size of up to 4 mm and 3 wt. % zinc oxide powder as dye. Marking on the road was not abraded, it was not necessary to renew it, which eliminated the relevant traffic closures. Marking was not slippery even in heavy rain. In the winter months, it never frosted, and with its anti-freeze properties it also affected the zebra stripes, making it easier to clear snow from the entire pedestrian crossing.

The anti-freeze tile may be in the shape of any component designed for road surfaces and surfaces exposed to weathering.

Claims (2)

the subject of the invention 230 425 Anti-freeze tile made of mixtures of aggregate, stone meal and binder, characterized in that it contains 6 to 20 wt.% Binder of polyolefin-based plastics, for example amorphous polypropylene and 15 to 32 wt.% Chemical for timezone additives, for example crystalline sodium chloride, grain size up to 4 mm. 2. Tiles according to point 1? characterized in that the mixture contains 0.02 to 5% by weight of dye.