Evaluation of Different Laboratory Methods for Simulation of Pavement Wear and Road Dust Generation

Abstract

ABSTRACT The study presented in this paper investigated the possibility of simulating wear by studded tires in the laboratory. Samples of suspended matter were produced by use of various laboratory wear equipment and compared to dust collected during indoor large-scale tests conducted in a Pavement Testing Machine at the Swedish National Road and Transport Research Institute. The project included studies on dust samples collected from asphalt using Tröger and Prall apparatus as well as samples collected from aggregates using the Nordic Ball mill, Los Angeles mill and micro-Deval mill. The dust samples were analyzed at the Norwegian University of Science and Technology with regard to composition, particle shape and particle size distribution. The project has clearly shown that simulation of wear due to studded tires in the laboratory is less time consuming and less resource demanding than full scale testing of pavements, and is useful for investigation of different pavements with regard to wear and dust generation.