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Calcium chloride and magnesium chloride are highly effective de-icing materials, and are used in winter road maintenance all over the world. Nedmag produces both products in large quantities, contributing to winter road maintenance in many countries. These include the Netherlands, Germany, Belgium, France, Scandinavia, Great Britain, the US, Canada and Russia.
In Europe, calcium chloride and magnesium chloride are predominantly used to humidify the ordinary salt used for icy roads (NaCl). Its effectiveness is undisputed. In North America and Russia, these products are used both in their liquid form and in their solid form, as the lower temperatures and persistent ice formation make regular salt ineffective. A few years ago, Moscow switched to spreading calcium chloride and magnesium chloride because the enormous quantity of sodium chloride that was spread every winter caused too much damage to the trees.
Spreading wet material has, among others, the following advantages over spreading dry material:
The use of calcium chloride (CaCl2) or magnesium chloride (MgCl2) as a humidifier in spreading wet materials has a number of positive effects in addition to the abovementioned advantages:
In the United States and Canada, other methods are used in addition to the spreading of dry and wet materials, such as spraying calcium chloride grit and magnesium chloride grit, particularly as a preventative measure in the event of (heavy) snowfall and black ice. The large melting capacity of these grits prevents that snow freezes to the roads, making the snow easier to remove from the road. In Europe, among others bridges, high roads and bicycle lanes are sprayed like this.