hiekoituksen

Hiekoitus is the process of spreading sand or grit on icy or snowy surfaces to improve traction and safety. It is used on roads, pavements, parking areas, and other outdoor surfaces, typically carried out by municipal road authorities, property managers, or private contractors during winter weather. The primary goal is to reduce skidding and make movement safer for pedestrians and motorists.

Materials used in hiekoitus include coarse sand and crushed rock grit. In some cases, grip-enhancing blends or small amounts of salt-based de-icers are added, depending on temperatures and local guidelines. The choice of material balances traction, visibility, and environmental impact, as grit can accumulate in drainage systems and waters. Routine procedures are adjusted according to forecasted conditions and post-storm observations.

Operations are performed with dedicated equipment such as hiekoitusautot or hiekoituskoneet (gritters) that hold a supply of material and disperse it through a spinner or spreader. Coverage patterns are designed to achieve even distribution, and operators may vary speed to control the amount laid down. After thaw or rainfall, cleaning or reapplication may be necessary to maintain traction.

Environmental and safety considerations include minimizing environmental runoff, reducing excessive grit application, and coordinating with weather forecasts. In many jurisdictions, hiekoitus is part of broader winter maintenance plans that also include snow plowing, de-icing, and sidewalk clearing. Public information channels may warn residents when traction materials are applied, to prevent unnecessary exposure or cleaning work.