Curing Characteristics and Mechanism of WER-SBR Composite Modified Emulsified Asphalt
LIU Shengjie
FU Yongteng
PENG Aihong
YE Feiyan
CAO Xu
Abstract：The emulsified asphalt was modified by a composite of waterborne epoxy resin,rubber latex and cement.An orthogonal experiment was conducted to analyze the significance of the effects of modifiers on the drying time and pull-off strength of the emulsified asphalt.Fluorescence microscopy,infrared spectroscopy and X-ray energy dispersive spectroscopy were used to investigate the compatibility mechanism.The results indicate that the waterborne epoxy resin has a significant impact on both drying time and pull-off strength of the emulsified asphalt.When the dosage reaches 9%,the waterborne epoxy resin begins to form a network structure.The waterborne epoxy resin,SBR and cement hydration products form a network skeleton through physical blending,which exists within the asphalt phase.Additionally,both the emulsified asphalt and the waterborne epoxy resin delay the hydration process of the cement.
Keywords：pavement materialepoxy resincomposite modified emulsified asphaltadhesion propertymicrostructure
Publication Date：2025-11-30
Online Publishing Date：2025-12-09(First online date of this platform, not the publication date of the document)
Pages：8( 1163-1170 )