Entropy-based correlation analysis of the dynamic modulus and high-temperature properties of rubber-plastic composite modified asphalt mixtures
Source abstract
Abstract
Abstract The use of rubber powder and plastic to enhance the mechanical properties of asphalt -pavement has gradually become a hot topic in current research. Rutting tests, low-temperature bending tests, and dynamic modulus tests were used at various temperatures and loading frequencies to comprehensively and thoroughly investigate the road performance and viscoelastic characteristics of rubber-plastic composite modified asphalt mixtures. A multi-scale evaluation system for high-temperature performance was established based on dynamic modulus, phase angle, and rutting resistance factor, and the statistical correlation with dynamic stability was quantified using gray entropy relational analysis. The results indicate that: Compared to rubber-modified and SBS-modified asphalt mixtures, rubber-plastic composite modified asphalt mixtures achieve a simultaneous improvement in high-temperature stability and low-temperature crack resistance, demonstrating significant advantages in road performance across the entire temperature range. The scientific validity and comprehensive advantages of the dynamic modulus system in evaluating the high-temperature performance of rubber-plastic composite modified asphalt were demonstrated, and the root cause of the superiority of the rubber-plastic composite modified system was explained from the micro-mechanism of rigid-flexible coupling. The calculation results show that indicate that the correlation coefficients between dynamic modulus and rutting resistance factor, and dynamic stability, both exceed 0.93 based on the gray entropy relational analysis method. This confirms the significant reliability and scientific validity of this mechanical indicator system in engineering applications. This study provides a theoretically sound and quantitatively verifiable method, along with data support, for the design and evaluation of high-performance asphalt mixtures.
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Research context
OpenAlex topics: Asphalt Pavement Performance Evaluation · Public Health and Nutrition · Railway Engineering and Dynamics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Infrastructure Disaster Prevention, Mitigation, and Intelligent Evaluation Technology, Hebei University
Tangshan Highway Construction Management Center
Beijing Key Laboratory of Traffic Engineering, College of Metropolitan Transportation, Beijing University of Technology
Funding
Hebei Province Higher Education Science and Technology Research Project · Hebei Province Transportation Science and Technology Project · Opening Project Fund of Materials Service Safety Assessment Facilities
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