Affiliation:
1. College of Transportation Engineering, Dalian Maritime University, Dalian 116026, China
2. College of Communication, Tonghua Normal University, Tonghua 134002, China
3. School of Transportation Engineering, Shenyang Jianzhu University, Shenyang 110168, China
Abstract
In recent years, eucommia ulmoides gum (EUG), also known as gutta-percha, has been extensively researched. Molecular dynamic simulations and experiments were used together to look at how well gutta-percha and asphalt work together and how gutta-percha-modified asphalt works. To investigate the gutta-percha and asphalt blending systems, the molecular models of asphalt and various dosages of gutta-percha-modified asphalt were set up using Materials Studio (MS), and the solubility parameters, intermolecular interaction energy, diffusion coefficient, and mechanical properties (including elastic modulus, bulk modulus, and shear modulus) of each system were calculated using molecular dynamic simulations at various temperatures. The findings indicate that EUG and asphalt are compatible, and sulfurized eucommia ulmoides gum (SEUG) and asphalt are more compatible than EUG. However, SEUG-modified asphalt has better mechanical properties than EUG, and the best preparation conditions are 10 wt% doping and 1 h of 180 °C shearing. Primarily, physical modifications are required for gutta-percha-modified asphalt.
Funder
Natural Science Foundation of China
China Postdoctoral Science Foundation
Fundamental Research Funds for the Central Universities
“Double Tops” Construction Special Project of Dalian Maritime University
Science Foundation of Dalian, China
Foundation of Liaoning Educational Committee
Subject
General Materials Science
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