Characterization of interlayer bonding mechanism based on interface morphology between asphalt mix and electronics devices covers materials

Abstract

The electrification and digitalization of transportation is one of the most important challenges in achieving sector decarbonization, which is responsible for nearly one-fifth of greenhouse gas emissions in Europe. One of the issues related to road electrification is the adherence between pavement surfaces and embedded electronic devices (sensors, charging units, etc.). This study presents a methodology for evaluating the adherence between asphalt surfaces and electronic elements, characterizing the morphology of surfaces using a laser scanner as a Non-Destructive Testing (NDT) technique. The main objective is to optimize the application of tack coat and define the appropriate adhesive type based on the specific surface type present on the road. Adherence tests were conducted using various types of adhesives with different surface morphologies, including asphalt mixtures and materials for electronic device coating. Surface texture measurement was performed using a laser scanner. The results of this study have direct implications for ecologically sustainable and efficient road management. Optimizing the application of tack coat based on texture measurement allows for timely maintenance interventions. Additionally, the incorporation of embedded electronic elements in the pavement for continuous monitoring of road conditions contributes to more sustainable and efficient management practices. Overall, this research provides valuable insights into adherence between asphalt surfaces and embedded electronic devices. The methodology utilizing a laser scanner offers a promising approach for optimizing adherence and contributing to efficient road management.