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Evaluation of Dust Palliatives for Unpaved Roads in Arid Climates |
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| Authors: | John F. Rushing Andrew Harrison Jeb S. Tingle Quint Mason Tim McCaffrey |
| Affiliation: | 1Research Physical Scientist, U.S. Army Engineer Research and Development Center, Airfields and Pavements Branch, 3909 Halls Ferry Rd., Vicksburg, MS 39180 (corresponding author). E-mail: john.f.rushing@erdc.usace.army.mil 2Research Civil Engineer, U.S. Army Engineer Research and Development Center, Airfields and Pavements Branch, 3909 Halls Ferry Rd., Vicksburg, MS 39180. E-mail: andrew.harrison@erdc.usace.army.mil 3Research Civil Engineer, U.S. Army Engineer Research and Development Center, Airfields and Pavements Branch, Airfields and Pavements Branch, 3909 Halls Ferry Rd., Vicksburg, MS 39180. E-mail: jeb.s.tingle@erdc.usace.army.mil 4Civil Engineering Technician, U.S. Army Engineer Research and Development Center, Airfields and Pavements Branch, 3909 Halls Ferry Rd., Vicksburg, MS 39180. E-mail: quint.mason@erdc.usace.army.mil 5Civil Engineering Technician, U.S. Army Engineer Research and Development Center, Airfields and Pavements Branch, 3909 Halls Ferry Rd., Vicksburg, MS 39180. E-mail: timothy.j.mccaffrey@erdc.usace.army.mil |
| Abstract: | An evaluation of commercial and experimental dust palliatives was conducted to determine their effectiveness for mitigating fugitive dust on roads in arid climates. Several types of chemicals were tested including polymer emulsions, lignosulfonates, chloride salts, synthetic fluids, an asphalt emulsion, a polysaccharide solution, a polyacrylamide, and a guar gum. Each product was placed in an individual test section at a rate of 3.8?L/m2 using an admix construction method (grade/spray/till/compact/spray). Fourteen test sections were constructed and observed at 30-day intervals to monitor product performance. Data from both stationary and mobile particle collectors were analyzed to determine the ability of each product to suppress dust for extended periods. Several products are recommended for use on roads in arid climates as a result of this evaluation. |
| Keywords: | Dust Unpaved roads Arid lands |