A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Modeling and testing of road surface aggregate wearing behaviour
Graphical abstract
HighlightsNine sources of aggregates with different rock types and mineral contents were chosen for wearing analysis.Wearing tests with the Aachen Polishing Machine using real vehicle tires were conducted.We used the wearing model based on the tire-road contact theory of Persson.Based on a spectral analysis, the wave length corresponding to the wear of the surface was identified.
AbstractThe amount of urban dust and especially the particulate matter (PM) production is closely related to the wearing resistance of the aggregates on the road surface. In this research, the Aachen Polishing Machine (APM) was used to conduct wearing tests; the APM uses real vehicle tires. The obtained results were analysed with a rubber-road wearing model. Based on the spectral analysis of the texture, the wave length coinciding with the most wear of the specimen surface was identified. Findings show that the decrease of skid resistance can be ascribed to changes in the micro-texture up to 62.8μm in the polishing test with the APM procedure. The final friction after polishing tests exhibits a positive correlation with the average hardness of the aggregate and the mass percentage of non-fissile mineral. A positive interdependence is observed for the quartz content whilst the calcite content exhibited a negative one. The average height induced by polishing is selected to determine and quantify the abrasion of aggregate. The results show a directly proportional relationship between the abrasion and the contact pressure.
Modeling and testing of road surface aggregate wearing behaviour
Graphical abstract
HighlightsNine sources of aggregates with different rock types and mineral contents were chosen for wearing analysis.Wearing tests with the Aachen Polishing Machine using real vehicle tires were conducted.We used the wearing model based on the tire-road contact theory of Persson.Based on a spectral analysis, the wave length corresponding to the wear of the surface was identified.
AbstractThe amount of urban dust and especially the particulate matter (PM) production is closely related to the wearing resistance of the aggregates on the road surface. In this research, the Aachen Polishing Machine (APM) was used to conduct wearing tests; the APM uses real vehicle tires. The obtained results were analysed with a rubber-road wearing model. Based on the spectral analysis of the texture, the wave length coinciding with the most wear of the specimen surface was identified. Findings show that the decrease of skid resistance can be ascribed to changes in the micro-texture up to 62.8μm in the polishing test with the APM procedure. The final friction after polishing tests exhibits a positive correlation with the average hardness of the aggregate and the mass percentage of non-fissile mineral. A positive interdependence is observed for the quartz content whilst the calcite content exhibited a negative one. The average height induced by polishing is selected to determine and quantify the abrasion of aggregate. The results show a directly proportional relationship between the abrasion and the contact pressure.
Modeling and testing of road surface aggregate wearing behaviour
Wang, Dawei (author) / Liu, Pengfei (author) / Wang, Hao (author) / Ueckermann, Andreas (author) / Oeser, Markus (author)
Construction and Building Materials ; 131 ; 129-137
2016-11-14
9 pages
Article (Journal)
Electronic Resource
English
Modeling and testing of road surface aggregate wearing behaviour
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