Effects of aggregate properties on strength characteristics of the foamed bitumen mixture with relation to Western Australian roadway construction

Abstract

Foamed bitumen is produced by injecting small amounts of cold water and air into a hot bitumen mix, typically at about 180°C. This thesis aims to determine an effective mix design for foamed bitumen for use in Western Australian conditions, based on mechanical testing using typical Western Australian aggregates, while altering the percentage of crushed rock base and crushed limestone as well as the fine contents and grading curves within the aggregate mix.