Post By Amanda LaForest
It is a well-known fact that a lot of dust kicked up by road traffic and construction machinery each and every day and that this dust can pose both a safety and a health hazard to those who are exposed to it. Dust control is an important consideration for business owners, landowners, and construction site managers, as dusty conditions decrease visibility, cause damage to property, and can pose health risks to both people and livestock. Gone are the days when spraying plain water on unpaved areas was adequate enough to make both the public and city officials happy. Now, newer methods are not only readily available but are also affordable and significantly more effective than wetting down dirt with water. These methods are chemical-based and come in an easy to apply pelletized or liquid form. But which form is the right one for you?
Calcium Chloride PelletsFor over 100 years, calcium chloride has been the dust control chemical of choice for helping to control dust from unpaved roadways. Its use has expanded over the years to also reduce dust from construction sites, as well as from the shoulders of paved roads. In its modern form calcium chloride comes in pellets, including our Dust Down PRO, which can be spread directly on unpaved areas. It is recommended to first wet the area down with water before spreading the pellets with a rotary spreader at a rate of 70 to 100 pounds per 1,000 square feet. After that, all that is required is occasional watering to reactivate the calcium chloride. On average, the pellets are effective at controlling dust for six months, and upwards of a year for areas that see less traffic.
Another option is to dissolve the calcium chloride in water, at a rate of 2 to 3 pounds of pellets for each gallon of water. Add the pellets to the water slowly while stirring, being careful to avoid touching the solution as it will become hot as the calcium chloride reacts with the water. Then, simply apply the liquid to the area at a rate of 20 gallons per 1,000 square feet.
Polymer Blend Liquid
A newer option on the dust control market is our Dust Down POLY PRO, a special vinyl acetate/ethylene co-polymer emulsion, that is designed to work to keep down dust even more effectively than calcium chloride. Its liquid form makes the application a breeze. Simply dilute 1 gallon of POLY PRO to approximately 20 gallons of water. The liquid must then be applied at a rate of 20 gallons per 500 square feet. Depending on the amount of traffic through the area, the application can last anywhere from 3 to 12 months. After the initial application, reapplication is even simpler as it requires less POLY PRO. Mix 1 gallon of POLY PRO to 40 gallons of water, and apply at a rate of 40 gallons to 1,000 square feet.
Two Forms, Same Results
While these two products use different chemicals and come in different forms, the way they work is almost exactly the same. Both work to reduce dust by bonding with dust particles on the ground and weighing them down, thus preventing them from becoming airborne. POLY PRO, however, goes one step further, actually hardening dust particles in order to prevent dust. Another added bonus is that it doesn’t present the same risk of damage to vehicles that calcium chloride does, and the solution doesn’t become hot when mixed with water.
No matter which method you choose, you can be assured that our products are of the highest quality, and will work to effectively control dust in whatever application you require.