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    Laboratory Procedure for Measuring the Effectiveness of Dust Control Palliatives

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    2015-S-UAF-108_-David-Barnes_D ...
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    Author
    Barnes, David
    Connor, Billy
    Keyword
    Dust Control
    Dust
    Metadata
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    URI
    http://hdl.handle.net/11122/8831
    Abstract
    Creation of fugitive dust on unpaved roads results in the loss of up to 25 mm (one inch) of surface aggregate annually (FHWA, 1998). On these roads, shearing forces created by vehicles dislodge the fine aggregate fraction (silt and clay) that binds the coarse aggregate. Turbulent airflow created by vehicles loft these fine particles in plumes of fugitive dust that impact health, safety, and quality of life. The loss of these particles results in raveling of the road surface, culminating in large annual losses of surface aggregate. Chemical dust control (palliatives) is an attractive option. However, there are currently no accepted field or laboratory performance testing procedures for chemical road dust palliatives. The lack of a method to predict palliative performance forces engineers and road managers into a trial-and-error methodology or reliance on personal judgment and supplier claims to determine what will work best on their unpaved road or runway surfaces. The overall objective of this research was to finalize the development of a laboratory test procedure for evaluating different dust control formulations and application rates required to effectively control the airborne suspension of dust particles in the size range (aerodynamic diameter) of 10 μm or less.
    Date
    2017-06
    Publisher
    Alaska University Transportation Center
    Type
    Technical Report
    Collections
    PacTrans Project Reports

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