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Communication Dans Un Congrès Année : 2021

Study on a test track of dust resuspension induced by a vehicle

Résumé

An experimental campaign was carried out on a test track to assess resuspension of dust by vehicle traffic. Two vehicles were driven on a road covered by four different types of particles representing a wide range of fine soils. Each test consisted of running one of the vehicles at a given speed (30, 45 or 60 km.h-1) over one of the type of particles previously spread on the road at a given mass per unit area (200, 400 or 600 g.m-2). The concentration of resuspended particles was measured by suction of the dust plume behind the rear tire using a particle counter. The influence of physical (type and quantity of particles, vehicle geometry) and mechanical (vehicle speed, tire/surface interface, dynamical behavior) parameters on particle lift are discussed. In terms of particle mass concentrations, results indicate that doubling the vehicle speed leads to 1.5 to 5.7 times higher PM10 emissions. The lift of fine clay particles is 2 to 9 times more important than that of coarser soils. Significant differences are also observed between the emissions of the two vehicles, pointing out the key role of ground clearance and mud flaps in particles resuspension. It is believed that the present results may be extended to earthworks sites where solutions are expected to reduce dust emissions without watering.
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Dates et versions

hal-03272241 , version 1 (28-06-2021)
hal-03272241 , version 2 (22-03-2022)

Identifiants

  • HAL Id : hal-03272241 , version 2

Citer

Mickael Le Vern, Andry Razakamanantsoa, Frédéric Murzyn, Frédérique Larrarte, Véronique Cerezo. Study on a test track of dust resuspension induced by a vehicle. Internationnal Transport and Air Pollution Conference 2021, Mar 2021, GRAZ, Austria. 12p. ⟨hal-03272241v2⟩
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