Road-building equipment

Introduction of salt lowers the freezing point of solutions in the sand, it prevents freezing in winter, as

contact with moisture, salts contained in the sand, provides education solutions, distributed thin layer of sand grains. E

Upon contact with the surface of the snow and ice or ice overrunning a grain of sand, due to variations in temperature, freezes (fixed) on the treated surface. Despite the fact that some of the grains of sand attached to the surface in heavy traffic in excess of 500 units / hr., sand partially or completely swept away from the surface of the road, so we need 2-3 hours to re-process it with a mixture of sand and salt. Passive exposure to the glaze of the film at each treatment with a mixture of sand and salt is accompanied by melting a portion of it, and when handling multiple film is completely destroyed.

Crossroads, lifts, places of inhibition, entrances to the bridges is desirable to handle the double-standard sand and salt mixture in a selective manner every hour after the first dressing.

Process materials used in the winter cleaning of urban roads are used, usually in the solid state, in the form of granules or flakes, and only as a temporary measure - in the liquid state (eg, calcium chloride, used for the preparation of sand and salt mixture). The norm of the distribution of liquid reagents is determined by applying to the solid.

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