ABSTRACT
ABSTRACT: When fuels, or lubricants or Hazardous Materials (Hazmats) accidentally come into contact with asphalt pavements for a given period of time, under given load conditions, the asphalt binder is softened, leading to aggregate loss on the surface. This process depends on many parameters: mix effective porosity, diameter of the pores, quantity and type of fuel, course thickness, immersion time, asphalt binder characteristics, etc. This paper deals with models and strategies for the analysis of the consequences of hazmat releases on hot mix asphalts. A model has been formalized and experimentally validated through a new device, the Brush TesteRC®. Different mixes, in combination with various fuels, have been investigated. Advanced tests on volumetrics, asphalt binder characteristics and HMAs chemical tolerance have been carried out. Results demonstrated that asphalt binder properties and mix volumetrics can be the basis for the interpretation of the involved phenomena. The obtained results provided information and findings for practical benefit of the work.
