MODEL EXPERIMENTS OF THE RESUSPENSION CAUSED BY ROAD TRAFFIC

In the literature field experiments were performed in which factors affecting the resuspension of particulate material by road traffic were investigated. The factors involved were in most cases the particle size and the speed of the car. In some cases even the size of the car was varied (medium-sized car or truck). The present experiments were made to obtain a better understanding of the influence of the aerodynamic effects (not the tire effects) affecting resuspension by road traffic. In the experiments a model was used to investigate the influence of its shape, its velocity, and its distance to the surface. The experiments also included the size of the particles and the kind of surface from which the particles were resuspended. These experiments were performed in order to make possible a better interpretation of the field tests.