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Abstract:Fugitive dust emanating from vehicle traffic on unpaved roads and runways can have significant impacts on safety, health, quality of life, and the cost
of maintenance. Managing dust provides a means of reducing these impacts. Shearing forces created at the interface between the surface and vehicle
tires produce dust on unpaved surfaces. The dust produced becomes airborne as a result of turbulence created by moving vehicles. Once airborne,
different monitoring techniques can be used to assess the amount of fugitive dust produced and to measure the effectiveness of dust management
strategies. Communities can manage dust by properly constructing and maintaining the unpaved surface, reducing vehicle speed on roads, and with the
proper use of dust palliatives. The proper gradation of aggregate, the right profile, and good drainage are all necessary for reducing fugitive dust from
unpaved roads and runways. Moreover, reducing vehicle speed on unpaved roads can dramatically reduce the amount of fugitive dust and result in
longer periods between maintenance events. Several different types of palliatives are available for both managing dust on unpaved roads and runways.
The choice of palliative is dependent on aggregate gradation, traffic amounts, climate, and location (remote or accessible).
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