COMMONLY ASKED QUESTIONS
WHAT IS DUST CONTROL?
As applied by Prestige, Inc., it is a liquid magnesium chloride product designed to penetrate the soil for surface stability and control of fugitive dust particles.
WHAT ARE THE BENEFITS OF DUST CONTROL?
¨ Cleaner air for better health
¨ Cleaner vehicles, property, vegetation, and living sites
¨ An inexpensive, smooth, firm, driving surface
¨ Increases driver visibility
¨ Reduces flying gravel, soft spots, and rough roads
¨ Stabilizes soil surface and reduces wind erosion
¨ Temporarily eliminates blading/grading
WHERE SHOULD DUST CONTROL BE USED?
This procedure works on most road types. Quality road base mixtures (3/4” gravel down to fines) or recycled asphalt achieve the best results. Recycled concrete and straight sand should be avoided. High traffic areas where several inches of “powder” have been created should be rectified before treatment. Treatments are used extensively on timber and mining haul roads, construction sites, staging areas, as well as private and rural roads, and parking lots.
HOW DOES IT WORK?
One application on soil or unpaved roads puts four stabilizing mechanisms to work simultaneously:
¨ Hygroscopicity of magnesium chloride activates high surface tension strength.
¨ Particle charge bonding adds strength to the fine ground soil particles
¨ Adhesive properties work to bind the soil particles together.
¨ Chemical composition increases surface compaction, providing the soil particles with greater interlocking strength. Because of these mechanisms, it is highly effective under most road conditions, in low relative humidity as well as high.
HOW SHOULD I PREPARE MY ROAD FOR APPLICATION?
The better the conditions, the more successful the dust control application will be. The surface should be permeable, smooth, firm, and shaped for drainage. In other words, make sure the ruts, washboards, potholes, drainage problems, gravel segregation and hard impervious areas have been rectified.
· BLADING will adequately prepare the road. It may not even be necessary if the surface is already smooth, shaped and evenly mixed. Pre-watering enhances the blading process.
· COMPACTING should be performed if blading loosens the surface. Don’t forget to water the surface before compacting. This procedure will restore a dense, tight surface.
If the surface is too tight for easy water penetration, it should be bladed and re-compacted, creating a firm but easily penetrated surface. For the best results, the surface should be pre-watered several hours before application. If an extensive area is to be covered, it can be pre-watered the afternoon or evening before application. No matter when you pre-water, remember that the surface should be damp (not saturated) at the time of application to extend the life of the application.
HOW LONG DOES A TREATMENT LAST?
Applied at a rate of 0.5 gallons per square yard most applications last between 4 and 9 months, often longer. Soil type and proper preparation are the biggest factors in longevity.
WHAT ABOUT TRAFFIC?
Traffic has little effect on the treatment during application, but should be held off if possible, until the dust control has penetrated. If traffic cannot be held up, it should be slowed to around 10 miles per hour to minimize splashing and coating on vehicles.