MODEL EXPERIMENTS OF THE RESUSPENSION CAUSED BY ROAD TRAFFIC

In the literature field experiments were performed in which factors af fecting the resuspension of particulate material by road traffic were investigated. The factors involved were in most cases the particle siz e 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 i ts shape, its velocity, and its distance to the surface. The experimen ts also included the size of the particles and the kind of surface fro m which the particles were resuspended. These experiments were perform ed in order to make possible a better interpretation of the field test s.