Highways Agency Reports

Abstract:This three-year research project was concerned with assessing the potential for contamination resulting from the use of alternative aggregates in road construction and bulk fill. The approach was to define and verify a logical materialassessment procedure focusing on a tiered series of material characterisation and leaching tests. The material assessment procedure was used to investigate how the in-situ conditions of usage influence the leaching process and the nature of any impact. In this report, a material assessment strategy is defined along with recommendations for binder treatments based on material properties anusage scenario.