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Airport Runway Deicer & Concrete Anti-icing Snow melting or Thawing Agent Deicer Manufacturers
All your physics and chemistry of Snow-melting, Deicer or Deicing and Anti icing.
De-icing is defined as removal of existing, snow ice, frost, etc., from a surface. It includes both mechanical (plowing or scraping) or chemical (application of salt or other ice melting chemicals) methods.
Anti-icing is defined as the pretreatment of a roadway, sidewalk or parking lot with ice melting chemicals before a storm, to prevent or delay the formation of ice, or the adhesion of ice and snow.
Ice melting products can help facility managers keep their buildings safe and approachable. Good snow and ice control is definitely a large part of slip-and-fall prevention. Not using deicer or anti icing snow melting compounds is a costly error. Do not over use but do use it and use the right type of de icer.
The primary purpose of chemical deicing is not to melt surface ice but to diffuse down through the snow and ice to break the bond between frozen precipitation and the ground. Putting deicer on a thick snow simply doesn’t work. Ice melt must be applied on the ground for it to be effective. Ideally, this should happen in anticipation of a storm or the product should be spread before precipitation freezes or as soon as possible so that the snow does not set in to ice.
Pre-application is ideal as an initial deterrent before the snow falls, though it is often difficult to predict necessity. The freeze-thaw cycle of ice and snow causes expansion and contraction within the cracked concrete and damages it. All ice and snow melt compounds can be impractical when snow accumulates to the amounts of more than three inches. Before using in build ups of more than three inches be sure to shovel or plow away excess snow and then apply Snow melt to remaining hard packed snow. After it has penetrated and broken through ice, remove melted slush.
There are several different compounds used to melt ice and snow. Ice melting compounds consist of different types of salt. As the salt dissolves, it forms a eutectic solution also known as a brine solution. The brine solution has a lower freezing point than water. This causes ice and snow in contact with the brine solution to melt.
Brine or wetted salt is usually applied shortly before a snowstorm arrives. Properly performed, anti-icing can significantly reduce the amount of salt required, and allows easier removal by mechanical methods. Anti-icing prevents the bond of snow and ice freezing to the road surface. It also reduces the opportunity for “hard-pack” to develop and provides a wet surface under the plow’s cutting edge. When a surface has an anti-icing treatment, the first stroke of plow will usually break the ice, right from the pavement.
Anti-icing is a proactive approach to snow and ice control. Treatments consist of applying Anti-icing Brine with de-icer salt to pavement before, or at the beginning of, a storm. Treatments create a barrier to prevent snow and ice from bonding to pavement. This allows accumulated snow to be pushed off the road, leaving the pavement relatively dry.
Anti-icing reduces the total chemical use,
Anti-icing reduces materials and equipment costs and time,
Pavement conditions are better when ice formation is prevented,
Anti-icing makes post-storm cleanup easier and faster.
Deicing Anti icing, Snow melting thawing Information
The function of ice melting chemicals is to break the bond between the road surface and the ice that forms on it. Once the bond is broken, the ice can be easily chipped off. Snow melting compound can also be used on cleared surfaces to prevent ice from forming. The amount of snow melting product that should be used depends on the thickness of ice desired to be removed, temperature, and type of ice melter. The right amount will penetrate through the ice and form a brine solution underneath the sheet of ice loosening the bond allowing the ice to be broken off.
De-icing of roads has traditionally been done with salt, spread by snowplows or dump trucks designed to spread it, often mixed with sand and gravel, on slick roads. Sodium chloride (natural raw common salt) is normally used, as it is inexpensive and readily available in large quantities. However, salt is workable for snow melting up to −9 °C or 15 °F, it is of no help when the temperature falls below this point. It also has a strong tendency to cause corrosion, rusting the steel used in most vehicles and the rebar in concrete bridges. More recent snow-melters use other salts, such as calcium chloride and magnesium chloride, which not only depress the freezing point of water to a much lower temperature, but also produce an exothermic reaction. These too contain chloride ions, with a tendency to corrode steel.
More recently, organic compounds have been developed that reduce the environmental issues connected with salts and have longer residual effects when spread on roadways, usually in conjunction with salt brines or solids. Mixing common rock salt with some organic compounds and magnesium chloride or calcium chloride results in spread-able materials that are both effective to much colder temperatures as well as at lower overall rates of spreading per unit area.
Chemical Ice treatment materials include:
Sodium Chloride (natural raw common salt, NaCl)
Calcium Chloride (CaCl2)
Magnesium Chloride (MgCl2)
Potassium Chloride and Urea (KCl and (NH2)2CO)
Sodium Formate (HCOONa)
Sodium Acetate (CH3COONa)
Potassium Acetate (CH3COOK)
Calcium-Magnesium Acetate (C4H6O2Ca and C4H6O2Mg)
And many others ----------------------
Temperature Ranges for Snow melting or thawing; Deicer and Anti-icing Chemicals:
Using anti-icer, deicer or snow thawing or ice melting compounds to clear snow and ice from walks, drives, and entries near public buildings a universal practice. To achieve safe surfaces in the shortest time with the least total cost, ice melters are a necessity. Since this item has widespread acceptance, the market attracts a host of suppliers, some genuine and others creating a hype about their product. Many of these products are packaged with no mention of their chemical composition. Some others specifies contents but make erroneous or misleading claims about the products’ abilities, resulting in confusion.
The scientific method of snow melting or ice melting compounds’ effectiveness is the range of temperatures in which it can provide deicing action. The “practical” lowest temperature limits for these materials is defined as effective within 15-20 minutes of application and is listed next to the material. The following table is summarizing all the relevant aspects of a deicer. If you can select a generic chemical, it is better and cheaper than selecting a brand name:
Chemicals Used to Melt Ice
Name Eutectic Temp. Effective Temp. Comments: Pros & Cons Sodium chloride (natural raw common salt) NaCl -21C or -06F @ -09C or +15F @@ Keeps sidewalks dry; Corrosive, damages concrete & steel. Calcium chloride CaCl2 -51C or -60F @ -29C or -20F @@ Melts ice faster than sodium chloride; Attracts moisture. Damages concrete & steel. Magnesium chloride MgCl2 -33C or -28F @ -15C or +05F @@ Melts ice faster than sodium chloride; Attracts moisture. Damages concrete & steel. Potassium chloride KCl -11C or +13F @ -04C or +25F @@ Fertilizer; Damages concrete Urea (NH2)2CO -11C or +12F @ -04C or +25F @@ Fertilizer; Damages aquatic life Sodium Acetate CH3COONa -22C or -07F @ -10C or +14F @@ Safe for concrete, steel & vegetation Potassium acetate CH3COOK (Anti icing) -60C or -76F @ -30C or -22F @@ Safe for concrete, steel & vegetation. Used as Anti icing spray solution. Calcium magnesium acetate (CMA) Ca-MgCH3COOH -28C or -18F @ -9°C or +15F @@ Safe for concrete steel & vegetation; Better for preventing re-icing than as ice remover
Emphasis has been placed on the environmental impact of ice melters and many studies have been conducted. Virtually all of these studies have concluded that, given the alternative of hazardous conditions, the benefits of ice melters far outweigh their potential disadvantages. However, these concerns should be addressed.
Effect On Vegetation: All deicers or anti icing chemicals have the potential to damage plant life. However, in the amounts recommended for grounds maintenance, the threat to grass, trees and shrubs is minimal.
Effect on Concrete: Many are concerned with deicers’ or snow melting compound’s effects on concrete. Ammonium sulfate will chemically attack concrete. Chlorides will attack the iron bars in concrete and steel in other structures. When the freezing point of water is depressed, the number of freeze-thaw cycles the water goes through can increase. And the expansion of freezing water (hydraulic pressure) can exceed the strength limits of the concrete.
Corrosion: Ice melters can corrode steel in the concrete and in the vehicles moving on it. XtraTM Sodium acetate Snow Melting Agent is researched and developed as a new environment-friendly snow-melting agent for melting the ice and snow in airstrip, parking apron and taxiway in very short time. Sodium acetate and calcium magnesium acetate are dry, non-corrosive and biodegradable snow removal chemicals. The chemicals change snow from a firm powder into slush. It can save energy and time. This dry formulation is used on bridges, parking decks and airport runways. It does not attack rebar in reinforced concrete and is biodegradable, creating no problems in runoff water. Acetates are commonly used in structural concrete, parking garages, and airports where chlorides are banned due to the corrosion potential to aircraft systems.
Arabic مطار ديسير الثلج يذوب
Airport Runway Deicer Snow melting
Czech Zařízení na letišti, odmrazování tání sněhu
Danish Lufthavn deicer sne smelter
Dutch Luchthaven Ijsbestrijder sneeuw smelten
Finnish Airport deicer, lumen meltign
French Déglaçage aéroport neige fondante
German Flughafen Flächenenteiser Schnee schmelzen
Italian Antigelo aeroporto neve di fusione
Latvian Lidostas deicer sniega kušanas
Lithuanian Oro uosto deicer sniegas tirpsta
Norwegian Flyplass deicer snøen smelter
Polish Port lotniczy Deicer roztopienia śniegu
Portuguese Aeroporto deicou neve derretendo
Slovak Letisko odhmlievač sneh topenia
Spanish Hierro Aeropuerto nieve de fusión
Swedish Flygplatsen deicer snö smältning
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