2007 · 10 citations · 0 references
EngineeringCivil EngineeringGeotechnical EngineeringPavement EngineeringSoil MechanicsPavement DesignPavement EvaluationPavement Failure MechanismsPavement MaterialsPavement Performance AnalysisPorous MaterialsDeterioration AssessmentDeterioration ModelingMicrostructurePavement DeteriorationPhenomenological Models
In the present report drill cores from sixteen road sections in the Netherlands with single layer porous pavements of different age, performance and traffic has been investigated. Microstructure parameters have been defined and measured using CT-scanning and visual assessment of thin sections. It is found that the main overall deterioration mechanism is related to the adhesion and cohesion between mastic and aggregate. It is observed that clogging correlates with adhesion. This is probably due to one deterioration mechanism visually observed on thin sections; the bituminous mastic deteriorates in pavements with poor adhesion and leaves clogging in the voids. The present report only presents the analysis of the thin sections prepared, and no relations to the performance of porous pavements on the roads and the mix design are studied. Hence, it should be noted that this is a phenomenological study on cores.