Dust Control Chloride Products

How chloride dust control works

Untreated gravel loses its fine particles to traffic and wind, which destroys the road binder, accelerates washboarding and creates a visibility and health hazard. Applied as a liquid or spread as flake, both salts keep the surface slightly damp at the microscopic level, re-binding fines and dramatically cutting dust, grading frequency and aggregate loss.

Which product to use

CaCl₂ works to lower humidity and is the stronger performer in hot, dry climates; the magnesium option (MgCl₂) is less corrosive and gentler on adjacent vegetation. Both are available as liquid for spray application or flake for spreader application, in bulk and tote quantities.

Where dust control pays off

Treatment pays wherever a gravel surface sees regular traffic. Rural municipalities use dust-control chloride to cut grading frequency and aggregate loss on township roads; mine sites and quarries treat haul routes to protect equipment, visibility and worker health; construction projects suppress dust on lay-down yards and access roads. In each case, one well-timed application replaces repeated watering and grading, so the season-long cost usually lands below the labour it saves.

Planning a season program

A dust-control program works best planned, not reactive. Book the first application for late spring once the road is graded and holding moisture, estimate volume from the treated area rather than the worst dusty day, and schedule a light mid-season top-up for the busiest stretches. Chloride.ca supplies liquid and flake calcium and magnesium chloride on contract volume across Canada, with delivery timed to your application window so product is on site when the road is ready, season after season, on contract volume pricing. Booking the treatment and the delivery together keeps the whole dust-control program on one predictable schedule, with the calcium or magnesium grade chosen to suit your climate and the surfaces you maintain.

Application guidance