Corrosion inhibitors as additives to highway de-icing salts-laboratory tests. Paper I.

Up to a million tons of rock salt are spread on the roads of England and Wales during a severe winter. It has frequently been suggested that this salt causes increased corrosion damage to motor vehicles. Use of an intermittent salt spray test in the Road Research Laboratory has shown that a 3 per cent rock salt solution is about times more corrosive than urban rainwater to bare steel.