The Key to Dust Control

Dust control and gravel consolidation are very simple – it’s all about maintaining the proper moisture level in the gravel. Simply put; keep the gravel damp.

Designing the Best Dust Suppressant

For road engineers the best dust suppressant incorporates a number of key factors.

Dust Fighter Hi-Cal is naturally occurring mineral brine that is simply pumped from geo-formations in Southwestern Ontario. It does not require extensive energy intensive processing like calcium chloride or magnesium chloride. This keeps costs – and therefore prices, very economical.

Dust Fighter Hi-Cal is long lasting. Dust Fighter Hi-Cal contains calcium chloride and a synergistic combination of other hygroscopic salts that resists the evaporation of water from your road.

Dust Fighter Hi-Cal was formed by Mother Nature millions of years ago and exists in unlimited quantities. It does not require expensive processing. It is naturally good.

Gravel Road Consolidation

AASHTO Surface Course Gravel

Sieve           % Passing

1”   25.4      mm   100
3/4” 19.0      mm    85-100
3/8”   9.5      mm   65-100
#4     4.75    mm    55-85
#10     2.0     mm   40-70
#40     0.42   mm    25-45
#200    0.075 mm     10-25

Although the above gravel specification is ideal, many road departments utilize what is called an “A” gravel. These gravels perform best when the fines content is at the higher end of the specification typically 5%-8%.  Also by using gravel with up to 80% fractured faces, this will reduce stones from being “picked out” of the road by tire action leaving a depression where potholes will develop.

Tips for Better Performance

1.  Blade the road to the depth of the     deepest pothole.
2.  Set a 4% crown. Do not flat grade
3.  Apply Dust Fighter Hi-Cal early in     the spring to capture the  
      moisture already present in the      gravel.