The way to prevent slippery road surfaces

 

(57) Abstract:

The invention relates to road maintenance production, in particular to ways of dealing with winter slipperiness used to ensure the safe movement of vehicles on the roads and for the icing. The way to prevent slipperiness of road surfaces is carried out by applying acetazolamide substance is a by - product of the production of polytetramethylene, comprising, by weight. %: solid (crystalline) sodium acetate 57-59; insoluble in water balance - 0,2-0,7; water - the rest, as a liquid with a pH of 8-10 - sodium acetate - 25-32, chlorotolyl sodium - 2-5; water - the rest, at a flow rate of both forms of 12-15 kg per 1000 m2calculated on the anhydrous sodium acetate. The technical result is to improve the economic efficiency and environmental safety in the fight against winter slipperiness of road surfaces.

The invention relates to road maintenance production, in particular to ways of dealing with winter slipperiness used to ensure the safe movement of vehicles on the roads and for icing.

There are ways to prevent slipperiness road2) ( Bialobrzeski Century, and others Struggle with winter slipperiness on roads. - M. : Transport. 1975, S. 25). The disadvantage of these methods is the high chemical activity of the substances, the cost of producing them.

The closest in technical essence is a way to prevent slippery road surfaces by using sodium chloride (NaCl - table salt. (Bialobrzeski Century, and others Struggle with winter slipperiness on roads. - M. : Transport, 1975, S. 26).

The disadvantage of this method is the expense useful for industry material - sodium chloride (NaC1), the cost of its receipt. The use of this method results due to the high chemical activity of NaCl to accelerate the destruction of road surfaces and reinforced concrete structures, corrosion of metal parts of vehicles, salinity roadside soil, which affects the development of trees and shrubs.

The purpose of the invention is to improve the economic efficiency and improve environmental safety.

The essence of the method lies in the fact that, as the chemicals used acetazolamide by-product of prosecuted sodium - 57-59

Not soluble in water balance - 0,2-0,7

Water - the Rest

in liquid form with a pH of 8-9:

Sodium acetate - 25-32

Chlorotolyl sodium - 2-5

Water - the Rest,

when the consumption of both forms of 12-15 kg per 1000 m2calculated on the anhydrous sodium acetate. (Production process regulations "Spandex" JSC "Khimvolokno" , Volzhsky).

The technology of the method consists in the following.

Preparing a mixture of sodium acetate and sand mass ratio of 1: 10 and was applied on the experimental plot with ice formation. The flow of the mixture amounted to 300 kg per 1000 m2. The ice surface under a layer of the mixture has melted, the ice was loose.

The liquid form was prepared by dissolving the powder of sodium acetate with water in a mass ratio of 1: 1. The concentration of anhydrous sodium acetate was 28 wt. %. The processing area with the ice formation was carried out using a watering machine. The solution flow rate on the treated area was 0.2-0.3 l/m2. The treated area has partially thawed, loosened a lot of snow.

Technical efficiency of de-icing means is determined on the level of efficiency of a mixture of sand - salt. Compared with powa is a number of advantages: environmentally safer, as it penetrates the soil and in the water is easily absorbed by the microorganisms, corrosion low compared to metals, construction of road surfaces. In addition, the proposed substance is a by-product of an industrial process that allows efficient use of production waste and eliminate the cost of production of the chemical substance in the way of preventing slipperiness of road surfaces.

The way to prevent slippery road surfaces by spraying on a coating chemicals, characterized in that as a chemical substance used acetazolamide a byproduct of the production of polytetramethylene, comprising, by weight. %:

in solid form it:

Sodium acetate - 57-59

Not soluble in water balance - 0,2-0,7

Water - the Rest

in liquid form with a pH 8-10:

Sodium acetate - 25-32

Chlorotolyl sodium - 2-5

Water - the Rest

when the consumption of both forms of 12-15 kg per 1000 m2calculated on the anhydrous sodium acetate.

 

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FIELD: road servicing industry.

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.

6 cl, 2 tbl, 4 ex

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