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Examples of further measures against snow accretion on bridges and communication cables

Examples of applications to bridges, etc.

Almost no snow accretion on the snow slabs of bridges coated with HIREC (see blue area)

To prevent snow accumulation and allow snow to fall off due to its own weight, the following two conditions are essential:

  1. The inclination of the painting surface is necessary (preferably 50 degrees or more)
    Snow falling angle in snow falling test
  2. Unbalanced structure such as snow cutting board is required
    The diagram below shows the need for both super hydrophobic coating and an unbalanced structure such as a snow cutter.

The principle of snow shedding by gravity

Snow cutting board + HIREC coating on steel frame
HIREC to the snow cutting board + steel frame and so falls in the state of small snow
Without Countermeasures
If no countermeasures are taken, it will be difficult to avoid snow accretion because the weight of the snow will balance each other.

Examples of snow countermeasures for communication lines

Super hydrophobic cover that can reduce snow accumulation on communication lines

In snowy regions, snow can accumulate on communication lines, and if the amount of snow buildup increases, it can lead to problems such as the lines breaking or the fasteners on the lines becoming damaged. Furthermore, preventing snow accumulation on communication lines is not easy due to their thinness.

State of snow accretion on the communication line
Super hydrophobic cover attached to communication line

Therefore, we would like to introduce an example of a "Super hydrophobic cover"* that can reduce snow buildup on communication lines.

*The lower part of Super hydrophobic cover for communication lines (made of polypropylene) has a structure that opens into two parts, and a stopper is installed on the left and right sides.

The principle of "Super hydrophobic covers for communication lines"

Super hydrophobic cover + HIREC coating on communication cables
In the case of Super hydrophobic cover + HIREC coating, the water-repellent cover shakes in the wind and snow falls from the HIREC-coated cable.
Without Countermeasures
If no countermeasures are taken, the snow will connect to each other, making it difficult to avoid snow accretion.

Features of the "Super hydrophobic Cover for Communication Cables"

The following two functions reduce the amount of snow accretion.

  1. Since almost no snow accumulates on the Super hydrophobic cover for communication lines, there are breaks in snow accumulation.
  2. The Super hydrophobic cover for communication lines is affected by the wind, causing it to sway more than it would without the cover.