Dust Control

 

Dust is usually defined as airborne particles 10 microns or 2.5 microns (PM-10 and PM-2.5) or smaller in size and have been known to affect the human respiratory system. These minute dust particles can cause serious illness in people with children, the elderly, and those with respiratory issues being more at risk from infections.

According to the US Environmental Protection Agency, road dust is a major source of particulate matter in the atmosphere and is the largest source of PM 10. Dust control is required when fine dirt particles become airborne by the movement of vehicles on unpaved roads. Control of dust is determined by the conditions and the type of surface to be treated.  Factors like the road surface, the length of time between maintenance, and the long term plans for the road should be considered.

Effective dust control can be obtained using either LDC™ or MVA-60™ by mixing with water and applying to the surface with a pressurized spray system.

 

Dust Control Installation Guidelines for Enviroseal LDC™ or MVA-60™

All soil is not equal. Prior to any dust control installation, it is important to perform testing on your soil. Particle size, density, liquid limit and plasticity will have varying results. The following are general guidelines and determination of individual results depends on factors that include site conditions and available equipment, your situation may be different.

Prepare the surface: For best results, smooth, grade & compact the soil area to minimum 95% density. If the treatment area is natural soil or clay, loosen the top 1 or 2 inches (2.5 to 5 cm) and then compact prior to treatment.

Pre-Wetting: If the soil is very dry, pre-wet the surface with water at a rate of 1 gallon to every 100 square feet. This will help lower the surface tension and allow for deeper penetration.

Application Rates: Application rates vary depending on desired outcome, end use, and dosage rate. Typically, concentrated LDC or MVA-60 is used at 0.05 to 0.15 gallons per square yard.

Dilution rates: Dilution rates will vary depending on soil type, penetration depth, and in-situ soil moisture content. Typical water mix rates are from five to fifteen parts water. Addition of Enviroseal LDC or MVA-60 to the water last will prevent foaming. Determine water mix rates immediately prior to application by testing various mix rates within a given area.

Application process: Application should be performed with a pressurized water truck. Apply material in 2 or more passes. Do not let the area dry between coats.

Curing: For best results, lightly static compact the treated area after +/- 30 minutes. Do not compact if soil is too wet. Cure time is approximately 6 hours depending on ambient conditions. Hotter and drier conditions accelerate curing while lower temperatures and higher humidity reduce cure time. Treated areas can be opened to traffic immediately after application providing surface is not wet, Normal traffic will aid in compaction.

Turning areas: Areas subjected to turning vehicles will require heavier and more frequent applications because these areas are subject to shearing that causes potholes and rutting.

 

 

LDC™  is a modified vinyl blend with 40% solids that is our most economical product, it is formulated with surfactants specifically for dust and erosion control.

 

MVA-60™  is a modified vinyl acrylic with 61% polymer solids and has excellent binding capabilities to hold dust in place. It has good UV and water resistance and is 40% more concentrated than most competitors’ so you don’t ship watered down products.