RU2486307C1 - Method of removal road cover of ice and snow - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: in surfacing roadways anti-glaze compositions are used. Ice and snow are removed from road surface by vibroroller for 1-2 s and further mechanical cleaning by motor grader blade or icebreaker working tool.

EFFECT: power savings.

3 tbl

Description

The invention relates to the road industry, and in particular to methods for cleaning road surfaces from snow and ice formations.

Along with well-known methods of removing snow and ice formations, such as mechanical (chipping and cleaning with passive and active working bodies of graders, bulldozers, snow plows, ice cleavers), chemical (surface pretreatment with crystalline and liquid antifreeze salts, followed by mechanical removal), physical chemical or combined (preliminary coating of coatings with sand-salt mixtures followed by mechanical removal) [1], new ones were proposed: thermal (pre preliminarily effect on snow and ice deposits thermal radiation until complete defrosting intense infrared, svetogidravlicheskim and pulsed radiation at different optical wavelengths, followed by mechanical removal) [2].

The main disadvantages of traditional methods are: a) the harmful effects of chemicals on the coating material and the environment; b) the short duration of the frictional properties of sand-salt mixtures after each sprinkling. The disadvantages of thermal methods include: a) the risk of shock at the moment of radiation by the generator; b) the need for a special powerful infrared or other emitter.

The closest in technical essence and the achieved result to the proposed invention is a method for cleaning coatings by mechanical removal of snow-ice deposits [1]. The disadvantages of this method are: a) the need to use special powerful ice breakers to clean the coating; b) the risk of mechanical damage to the coating when removing snow-ice deposits.

The essence of the proposed method lies in the fact that for the coating device of the road are used compositions of anti-icing bitumen-mineral (asphalt) mixtures [3]. The cleaning of ice and snow-ice deposits on the surface of the coating is carried out by first exposing them to a vibratory roller for 1 ... 2 s and then mechanically cleaning them with a dump of a motor grader, bulldozer, snow blower and other machines.

The composition of the mixture according to the proposed solution is as follows, wt.%: Crushed stone of strong rocks fr. 5 ... 10 mm - 72.37; crushed sand - 10.70 ... 11.47; mineral powder - 10.15; stabilizing additives - 0.38, NaCl salt - 0.57 ... 0.80; salt of CaCl ₂ - 0 ... 0.08; viscous bitumen - 5.64.

The technical result of the proposed method consists in a sharp reduction in energy consumption during cleaning and adhesion forces of snow-ice formations from the coating surface, which allows: a) to use low-power snow blowers or other machines with a dump-plow working body for further cleaning; b) the possibility of year-round use of vibratory rollers idle in winter (increasing the efficiency of using vibratory rollers throughout the year).

The method is as follows.

When installing the road surface in the summer, anti-icing mixtures are used (Table 1). Ice and snow-ice deposits on the surface of the coating are cleaned by first exposing them to a vibratory roller for 1 ... 2 s and further mechanical cleaning by the blade of a motor grader or bulldozer or by the working body of the ice cleaver.

Table 3 The amount of ice adhesion to the surface of asphalt concrete at different vibration times Vibration time 1, sec Adhesion, MPa 0 0.27 5 0.22 8 0.20 thirty 0.06 45 0.00

Information sources:

1. Borisyuk N.V. Winter maintenance of urban roads: textbook. allowance / N.V. Borisyuk. - M.: MADI (GTU), 2005 .-- 115 p.

2. Patent for the invention of the Russian Federation. The method of cleaning hard airfield and road surfaces from snow and ice formations: RU 2307889 C2. E01H 5/10. 10/10/2007.

3. Patent for the invention of the Russian Federation. Bitumen-mineral mixture: RU 2167118 C2. C04B 26/26. 05/20/2001.

Claims (1)

The method of cleaning the coating from snow-ice deposits, including the preparation and laying in the top layer of the coating of hot asphalt concrete and crushed stone and mastic asphalt concrete mixtures, mechanical cleaning of the resulting ice and snow-ice formations from the coating surface, characterized in that the coating is made of anti-ice crushed stone mastic asphalt concrete, consisting of wt.%: crushed stone of strong rocks fr. 50-10 mm - 72.37; crushed sand 10.70-11.47; mineral powder - 10.15; stabilizing additives - 0.38; NaCl salts - 0.57-0.80; CaCl ₂ salts 0-0.08; viscous bitumen 5.64; produced within 1-2 with a preliminary impact on the surface of snow-ice deposits with the dump of a motor grader, bulldozer and other machines.