Optimizing the compatibility of pyrolytic carbon black and asphalt interfaces using silane coupling agents: A cross-scale approach
Source abstract
Abstract
This study systematically investigates the impact of three types of silane coupling agents on the molecular behavior of asphalt at the interface with pyrolytic carbon black (PCB) derived from waste tire pyrolysis, ranging from nano to macro scales. The goal is to provide a theoretical foundation for optimizing the compatibility of PCB-modified asphalt. Molecular dynamics models of the asphalt/coupling agent/PCB interface were constructed using Materials Studio software to analyze in detail how the dosage and type of coupling agent influence the compatibility at the asphalt/PCB interface. Furthermore, macroscopic compatibility tests, dynamic shear rheological (DSR) tests, and Fourier Transform Infrared Spectroscopy (FTIR) were performed to validate the simulation results and refine the optimization of the material formulation. The results show that the compatibility of PCB-modified asphalt significantly improves when the dosage of KH550 coupling agent is 1.34 %, and that of KH560 is 2.82 %, with improvements of 13.2 % and 12.5 %, respectively. Moreover, the molecular dynamics simulation results for KH560 and KH590 coupling agents correlate strongly with the macroscopic test results, further confirming the accuracy and reliability of the models. This study enriches the theoretical framework of PCB-modified asphalt compatibility and provides scientific guidance for material formulation design in practical applications.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Asphalt Pavement Performance Evaluation · Polymer Nanocomposites and Properties · Infrastructure Maintenance and Monitoring
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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