Analysis of Microstructure and Pyrolysis Process of Vulcanized Eucommia Ulmoides Gum Modified Asphalt
CUI Shichao
GUO Naisheng
ZHANG Jun
CHU Zhaoyang
Abstract：Vulcanized eucommia ulmoides gum modified asphalt(VEUGMA)was prepared by natural plant-based eucommia ulmoides gum(EUG),and the microstructure and pyrolysis process of VEUGMA were studied.The results show that VEUGMA is of lower penetration,higher softening point,larger ductility and viscosity,better deformation resistance at high temperature and cracking resistance at low temperature than matrix asphalt.Compared to matrix asphalt,VEUGMA has larger number and smaller size of honeycomb structures,lower root mean square roughness,greater adhesion,higher pyrolysis temperature,and less CO2 and CO release.The modification effect is the best when 6%EUG and 3.5%sulfur(calculated by EUG quality)are added to the matrix asphalt.
Keywords：vulcanized eucommia ulmoides gum modified asphaltcrosslinking networkmicrostructurethermogravimetric-Fourier transform infraredpyrolysis
Publication Date：2024-08-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 720-726 )