Lignosulfonates have a natural adhesive property when moist. When applied to dirt roads, the lignosulfonate solution coats individual road particles with a thin adhesive-like film that binds the particles together. It acts as a dispersant, allowing the particles to pack closer together for a stronger surface. Consequently, water uptake by the road bed surface is greatly reduced and the binder is less likely to be washed away by rain. Lignosulfonates are not corrosive like other dust control products and can be applied without special equipment or clothing.
Dust is less likely to enter engine parts, reducing equipment maintenance requirements.
As a result, frequent grading can be reduced or eliminated. Commercial lignosulfonate products meet the specifications of the U.S. Forest Service Administration, General Service Administration and local and regional government standards. Lignosulfonate use on roads has been endorsed by various agencies for decades. Recommendations for Effective Application Lignosulfonates for road applications are usually shipped in a concentrated solution and diluted with water on the job site to about a 25 percent solids content. Road conditions and climate can affect the application rate.