Researchers at Western University in southwestern Ontario are exploring alternative methods to de-ice roads amid a shortage of road salt in municipalities. The study, initiated in 2022, is investigating nine different substances to assess their effectiveness in melting road ice under various conditions. Christopher Power, an associate professor involved in the research, highlighted the overreliance on sodium chloride (rock salt) by Ontario municipalities due to its cost-effectiveness. While rock salt efficiently clears ice by lowering the freezing temperature of water, it has detrimental effects on metal structures and the environment. The study aims to identify more sustainable options for ice removal, with some substances like sodium acetate and beet juice already showing promise in other applications. Despite the completion of the study phase, researchers are currently analyzing data on melting efficiency and corrosiveness of the alternative substances. While no definitive replacement for rock salt has been determined, the study emphasizes the need for a more targeted and environmentally friendly approach to de-icing practices in the face of salt shortages and environmental concerns. Municipalities like the City of London are already adjusting their road-clearing strategies by incorporating sand-salt mixes during extreme cold spells to reduce salt usage.
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