|Salt is the most widely used de-icing agent for road maintenance in Europe and is used for: Anti-icing: This refers to the application of pre-wetted salt or brine to enhance the grip between tyres and the road surface. De-icing: This applies to the application of dry salt or pre-wetted salt. Depending on the sort of salt used, it is usually heated or diluted. In melting snow, de-icing|
salt is the most efficient agent as long as the pavement temperature isn’t below -18°C. Salt is considered the best de-icer due to its properties. It has the power to lower the freezing point of water and therefore prevents a bond between ice and road surfaces. Salt is also: – Easy to spread and store – The least expensive and most efficient deicer on the market – Readily available in large quantities The main challenge for winter maintenance lies in a reliable salt supply and storage.
De-icing is necessary to ensure mobility in the winter months. When combined with anti-icing programmes, de-icing guarantees road safety and mobility. Road management operators and authorities use a variety of of de-icing techniques, including: – Salt – Mechanical methods – The application of heat – The combination of chemicals – The application of abrasives – The use of carbohydrates – The use of calcium chloride and magnesium chloride Nevertheless, there is no better de-icer than sodium chloride, commonly referred to as de-icing salt.
Sorts of salt De-icing salt is composed of sodium chloride (NaCl), which can come from: – Rock salt – Evaporated salt – Solar salt Those different sorts of salt are all meant for different purposes and require different spreading techniques. Apart from the use of a sort of salt compared to another depends on local regulations. Requirements can differ given to different guidelines and standards.
Salt Storage In order to cope with winter conditions, salt storage is a simple way to ensure a sufficient salt supply close to areas that tend to require regular de-icing . As a result, salt storage and logistics are closely connected. As salt is a mineral, it never loses its capacity to melt snow and ice regardless of how long it is in storage. It is usually stacked in piles, whether indoors or outdoors. By storing salt in an interior environment, the formation of lumpy salt that is difficult to handle is avoided. This also allows it to move through spreaders and enhances its sustainability. By securing winter maintenance, salt storage enables the delivery of salt on time. When avoiding using up of salt, salt storage should target for a full, average winter.
Sustainability Due to increased environmental awareness, salt has often been criticised for its adverse effects on vegetation, its contribution to deterioratng water quality as well as its corrosive impact. Salt is, in fact, a natural mineral that is found all around us.