ANTI-SNOW PROPERTIES

  • THE PROBLEM


    International media often deal with the discomforts suffered by the populations of entire regions struck by sudden and heavy snowfalls, by blizzards and snowstorms with following frost.
    Motorways, roads, and airports are blocked by snow and ice.
    In such contexts, you are prevented from living normally. Vehicles stand still on roads and motorways,, consequently they block the mobility, even of special means of transportation conceived for moving under such circumstances. The first-aid service, such as ambulances and medical assistance, does not work. It is not possible to get to hospitals with one’s own vehicles. The other rescue institutions, such as firefighters and police forces, are unable to intervene. Even the armed forces cannot act, regardless of the adequate means at their disposal, especially if roads are clogged by stopped vehicles.
    Even primary goods, such as foodstuffs, fuels, combustibles, medicines, etc., remain stocked at their warehouses, without reaching those who need them. Civilian airports, and sometimes even military airports, are not operational.
  • THE SOLUTION


    And yet, a considerable part of such discomforts and relevant risks for the populations involved could be limited and, in some cases, even avoided, if access roads to hospitals, fire and police stations, army barracks, and airports, including strips and lay-by for planes, were made by means of asphalt (mix) with programme anti-snow / anti-ice asphalt (mix). With little effort it is possible to reduce or even eliminate the above mentioned risks, and contribute to increasing the level of national safety that, under such circumstances, would be seriously endangered.
    Through this asphalt (mix) treated with programme anti-snow you obtain the best possible results acting on two points:

    • the paving thickness with the asphalt (mix) containing the programme anti-snow
    • the stay time in a tank of the bitumen (asphalt) containing the specific programme
  • PAVING THICKNESS


    The higher the paving thickness with the asphalt (mix) conditioned by the anti-snow programme, the better will be the results.
    This can also be seen in the following table:

    Thickness of laid asphalt (mix) with programme Snow melted at the same time as the snowfalls on asphalt (mix) treated with programme
    5 cm. carpet 3 cm. < Estimated point < 4 cm.
    8 cm. Binder 4 cm. < Estimated point < 6 cm.
    12 cm. Tout-Venant 6 cm. < Estimated point < 9 cm.
    12 cm. Tout-Venant +
    8 cm. Binder +
    5 cm. carpet
    Laid one shortly after the other
    10 cm. < Estimated point < 20 cm.


    On alpine passes or in places of particular strategic importance, it is recommended to lay multiple types of asphalt (mix) with anti-snow / anti-ice asphalt (mix) programme until a total thickness of at least 35 cm. is reached.

    In the first and in the second year, you obtain on an average a snow-melting capacity for an amount that is approximately equal to the thickness of the laid asphalt (mix). In the following years, results improve progressively until they reach a snow melting that can be even twice thicker than the laid asphalt (mix) You should also consider the anti-ice properties of the asphalt (mix) treated this way.
  • STAY TIME


    The minimum rest time in a tank of the bitumen (asphalt) with the programme for anti-snow / anti-ice asphalt (mix) is fifteen days. With a shorter time, you risk endangering the result given.

    If the time is longer, you will obtain better quality results. Just to give you an example, if the rest lasts the whole winter or even more, that is for a time of at least seven months, all features will be highlighted afterwards in the anti-snow asphalt (mix) for better effectiveness.
    With a seven-month rest, you may notice features that do not even show in treatments with limited times. For example, one of such features is that, in case of equal results in regard to the fifteen-day treatment, you can use a considerably reduced percentage of bitumen (asphalt) in the mixture with inert materials, with economic savings that widely compensate the storage and capital stopping costs.
    If you use the same percentages of bitumen (asphalt) when making concrete, you will notice a performance that is probably considered unthinkable as a rule.

    You gather that you will obtain the best possible result with pavings carried out with the programme for anti-snow asphalt (mix) when you lay the highest asphalt (mix) thickness possible using bitumen (asphalt) treated with the programme for anti-snow asphalt (mix) that must have stayed in a tank as long as possible, before making concrete.