Experimental and numerical modelling of shear bonding between asphalt layers
Source abstract
Abstract
Interlayers in asphalt pavements are potential structural damage initiators. In order to better understand the quantitative role of interlayer parameters, such as surface roughness, binder type, binder content and loading type on interlayer shear strength, this paper focuses on the effects of particle interlock and contact conditions on interlayer strength through experimental and numerical modelling. Experimentally, interlayer shear box strength tests on a model material consisting of stiff binder blended with steel balls are performed with and without normal force confinement. A Discrete Element method model of the test is developed using measurements of the model material for calibrating the contact law and for validating the model. It is shown that this model captures adequately the measured force-displacement response of the specimens. It is thus a feasible starting point for numerically and experimentally studying the role of binder and tack coat regarding interlayer shear strength of real asphalt layers.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Asphalt Pavement Performance Evaluation · Geotechnical Engineering and Underground Structures · Infrastructure Maintenance and Monitoring
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Civil and Architectural Engineering, KTH – Royal Institute of Technology, Stockholm, Sweden
Department Engineering Sciences and Mathematics, Luleå University of Technology, Luleå, Sweden
Concrete and Asphalt, Empa, Swiss Federal Laboratories for Material Science and Technology, Duebendorf, Switzerland
PaRRC Partl Road Research Consulting, Oeschgen, Switzerland
References (24)
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