Performance Characterizations of Vulcanized <i>Eucommia Ulmoides</i> Gum-Modified

Abstract

To understand the effects of vulcanized Eucommia ulmoides gum (VEUG) on bituminous properties from a new angle, different thermal analysis methods were utilized to characterize the properties of VEUG-modified bitumen. Test results indicate that VEUG has a higher compatibility with virgin bitumen. The added VEUG improves bituminous thermal stability and increases bituminous flexibility, but lowers bituminous temperature sensitivity. It increases the anticracking performance of modified bitumen at low temperature. Also, the thermal decomposition stability of modified bitumen is slightly improved by VEUG. The thermal decomposition degree of saturated and aromatic hydrocarbons in VEUG-modified bitumen is less than that in virgin bitumen. VEUG reduces the formation of toxic gaseous products at high temperature. A VEUG content of 10% by weight is proposed to prepare VEUG-modified bitumen.