The way to create roughness on snow and ice surfaces

 

(57) Abstract:

The invention relates to the field of operation of roads in winter conditions, and particularly to a method of creating roughness on snow and ice surfaces. Solid particles are applied to the snow-ice surface in a mixture with water at the ratio of the volume of dry solids to the volume of water from 5 to 0.01. The method provides a more efficient use of solid particles and reduction in contamination areas. 1 Il.

The invention relates to the field of operation of roads in winter conditions, and more particularly to methods for increasing the coefficient of friction of snow and ice surfaces.

There is a method of creating roughness on snow and ice surfaces by sprinkling on the surface of the sand or granite chips (Winter in the city, an article in the newspaper "Has the idea of" Supplement to the weekly "Arguments and facts" N 1/20/, 1, 1994). Under the wheel of the vehicle or under the leg of the pedestrian solids few are pressed into the surface layer and increase the coefficient of friction.

The disadvantages of the method are the low efficiency of the use of sand or granite chips and to increase the pollution in the area. Low now is efficient friction is increased a little; secondly, the fact that convex and on the most slippery places, i.e. where they are needed most, the particles do not stay long and moved with snow or without him in the next few depressions on the side of the road are pedestrians on the soles of shoes on the premises of houses and urban transport. In the latter two cases after thawing snow sand turns to mud, and after drying mud into dust.

The aim of the invention is to improve the efficiency of solid particles and reduction of pollution of the area.

The objective is achieved by deposition on snow and ice surface of solid particles in a mixture with water at the ratio of the volume of dry solids to the volume of water from 5 to 0.01.

Comparison with the prototype shows that the inventive method differs in that the solid particles are applied to the surface of the snow-ice formation in a mixture with water from 5 to 0.01. Thus, the claimed method meets the criterion of "novelty". The study of other technical solutions in the field of technology of the features distinguishing the claimed invention from the prototype, have been identified. These signs provide more effective application of solid particles, the increase in the output layer, they are fixed in their original location, greatly increasing the friction, without a significant increase in contamination areas. Therefore, the new signs provide the claimed method the criterion of "substantial differences".

The drawing shows a diagram of the device for realization of the proposed method.

The entire device is placed on the chassis 1 of the vehicle. The device consists of a tank with 2 insulation 3. The tank 2 is filled with a mixture of water and sand. The ratio of water volume to the volume of the suspension is approximately 0.5. Tank 2 equipped with a stirrer 4. The device also includes a pump 5 with the suction and discharge branches 6, 7 and mounted the disk 8.

During the rotation of the agitator 4 sand particles are mixed and evenly distributed throughout the volume of water. Using pump 5 suspension along the branches 6 and 7 is supplied from the tank 2 to the surface of the rotating disc 8, which scatters the suspension in the form of drops. When the drops fall on the icy surface of the suspension rastekaetsja thin layer is bonded to the suspension of neighboring drops. Because the entire device, while on the chassis of the car, with him translational moves, the suspension covered part of the road surface within the range of the spray disk 8. Forming a thin layer of water Tolmin to him. The lower part of the particles are frozen in ice, and top - undrowned and represent the projections of roughness. In the first fraction of a second water residing on the surface is not yet cold particles flow to the frozen layer of the suspension and also freezes, forming a kind of a weld, the speaker of the layer of suspension and additionally strengthening the link of the particles with the surface. Frozen in the ice particles, despite exercised by a force from the wheels of cars or the feet of pedestrians, held in place, substantially increasing the coefficient of friction. In addition, since the possibility dissipation of particles decreases significantly contaminated areas. If the strength of the material used particles is low, after the destruction of their top ledges roughness on the surface will be presented to the "welds" out of the water. Application of the method is especially effective for ice. Usually on roads and sidewalks near the ice adjoin areas of compacted snow. The creation of compacted snow roughness is mainly preventive operation, warning education, resulting in heavy traffic (Karaban, N. and DS. 80), a thin slippery layer of ice.

At too low a temperature of the atmospheric air to prevent freezing of the droplets during their fall may be taken the following measures: conduct atomization in conditions that ensure the presence of only large drops; reducing the distance between the road surface and spreading disk; teploizolirovannye the suction and discharge branches from atmospheric air; an isolation area, where the atomization of the suspension, from the surrounding space, for example, a vertical flexible walls of rubber; heating the slurry to fill the tank or in the tank.

The ratio of the volume of dry solids and water can vary from 5 to 0.01. The first value may be, for example, when using a flat particles with a thickness of 1 mm, preorogenic to ice using water layer thickness 0.2 mm; the second, for example, when using particles having the shape of a sphere with a diameter of 0.1 mm, distributed over the road surface with a density of 50 particles on 1 cm2and filled with water to the middle. When applying a sufficiently large number of suspensions per unit area of road surface, the suspension will be filled and thereby liquidate existing on the surface is of Ernesta roads.

The way to create roughness on snow and ice surfaces by applying to the surface of solid particles, characterized in that the solid particles are applied in a mixture with water at the ratio of the volume of dry solids to the volume of water from 5 to 0.01.

 

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SUBSTANCE: the invention is dealt with the road servicing industry, in particular with the methods of extirpation of ice covering on motorways, bridges, flyovers, and also aerodromes. The method of the roadway covering slipperiness prevention provides for application of a roadway ice covering suppressing reactant based on acetate, in the capacity of which use a solution with pH=7-9.5, containing components in the following ratio (in mass %): magnesium acetate 13-17, potassium acetate 8-16, potassium hydrocarbonate 5-8, potassium carbonate 2-6, water-insoluble impurities 0-6, water - the rest. The roadway ice covering suppressing reactant may additionally contain a fired limestone in amount of 3-5 mass % in terms of calcium oxide. The method of production a roadway ice cover suppressing reactant for a roadway covering slipperiness prevention provides for mixing of a component containing a magnesium compound, iced acetic acid and water, in the capacity of the component containing the magnesium compound is used brucite, the stirring is exercised in two stages: first they continuously agitate brucite with water and a part of iced acetic acid in a stoichiometric ratio at the temperature of 50-70°C within 50-80 minutes, then, not terminating mixing at the same temperature in the produced mix with pH=5-6 add the rest of ice acetic acid and then add potash in amount exceeding by 0.1 - 6 % the stoichiometric ratio and continue agitation till production of the roadway ice cover suppressing reactant - a solution with pH = 7-9.5 with the above indicated composition. The used roadway ice cover suppressing reactant has composition mentioned above. The technical result consists in - maintenance of the low temperature at the reactant usage, ensuring the passing ice covered roadways motor vehicles metal corrosion protection and at use as the airfield runways coatings - the corrosion protection of metals used in aircraft designs as well. The roadway coating treated with the reactant has a high coefficient of adhesion, that reduces the accident rate on the roadways.

EFFECT: the invention ensures, that the roadway coating treated with the reactant decreases the accident rate on the roadways.

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FIELD: building industry in particular composition for reducing of acid rain, CO2-containing atmosphere, exhaust gas, etc. attack on architectural objects.

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4 cl, 2 tbl, 2 ex

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EFFECT: increased deicing properties, ecological safety and economy.

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FIELD: road cleaning of ice and snow.

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13 cl

FIELD: road building, particularly methods or arrangements for preventing slipperiness or protecting against influences of the weather.

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1 cl, 4 ex, 2 tbl

FIELD: construction, road works.

SUBSTANCE: invention is attributed to method of road surface slipperiness prevention, to method of manufacturing of deicing agent for road surface slipperiness prevention and to deicing agent for road surface slipperiness prevention. Deicing agent in the form of solid bulk material includes in mass % on unhydrous salts basis: sodium acetate 37.0÷68.8, magnesium acetate 6.2÷30.6, crystallisation water 15.0÷35.0. Also, method of specified agent manufacturing and method of road surface slipperiness prevention using the said agent are described. Invention is developed in subclaims of formula of invention.

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