Road salt (also known as de-icing salt, rock salt, snow salt or grit salt) is a salt used mainly as an anti-slip agent in winter road conditions, but also to prevent dust and snow build-up on roads. Various kinds of salts are used as road salt, but calcium chloride and sodium chloride (rock salt) are among the most common. The more expensive magnesium chloride is generally considered safer, but is not as widely used because of its cost and effect on structural integrity. When used in its solid form, road salt is often pre-wet to accelerate the ice-melting process. Road salts have been having adverse effects on the environment, including decreasing biodiversity, contaminating of water sources, and increasing soil salinity.
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👉 Road salt in the context of Runway
In aviation, a runway is an elongated, rectangular surface designed for the landing and takeoff of an aircraft. Runways may be a human-made surface (often asphalt, concrete, or a mixture of both) or a natural surface (grass, dirt, gravel, ice, sand or salt). Runways, taxiways and ramps, are sometimes referred to as "tarmac", though very few runways are built using tarmac. Takeoff and landing areas defined on the surface of water for seaplanes are generally referred to as waterways. Runway lengths are now commonly given in meters worldwide, except in North America where feet are commonly used.
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Road salt in the context of Soil salinity
Soil salinity is the salt content in the soil; the process of increasing the salt content is known as salinization (also called salination in American English). Salts occur naturally within soils and water. Salinization can be caused by natural processes such as mineral weathering or by the gradual withdrawal of an ocean. It can also come about through artificial processes such as irrigation and road salt.
Road salt in the context of January 2016 United States blizzard
The January 2016 United States blizzard was a deadly, historic and crippling blizzard that produced up to 3 ft (91 cm) of snow in parts of the Mid-Atlantic and Northeastern United States during January 22–24, 2016. A weather system, evolving from a shortwave trough that formed in the Pacific Northwest on January 19, consolidated into a defined low-pressure area on January 21 over Texas. Meteorologists indicated that a resultant storm could produce more than 2 ft (61 cm) of snow across a wide swath of the Mid-Atlantic region and could "paralyze the eastern third of the nation", and regarded it as a "potentially historic blizzard". Winter weather expert Paul Kocin described the blizzard as "kind of a top-10 snowstorm".
On January 20–22, the governors of eleven states and the mayor of Washington, D.C., declared a state of emergency in anticipation of significant snowfall and blizzard conditions. Approximately 103 million people were affected by the storm, with 33 million people placed under blizzard warnings. More than 13,000 flights were cancelled in relation to the storm, with effects rippling internationally. Thousands of National Guardsmen were placed on standby, and states deployed millions of gallons of brine and thousands of tons of road salt to lessen the storm's effect on roadways. A travel ban was instituted for New York City and Newark, New Jersey, for January 23–24. The storm was given various unofficial names, including Winter Storm Jonas, Blizzard of 2016, and Snowzilla.