Effect of Demulsification Behavior of Emulsified Asphalt on Rheological Properties in CA Paste and Its Mechanism
ZHU Xiaobin
HONG Jinxiang
LI Wei
Abstract：To reveal the demulsification behavior and mechanism of emulsified asphalt in CA mortar,the particle size distribution fluctuation and coagulation of anionic emulsified asphalt in the salt solution were investigated.The demulsification degree was controlled by adding CaC12 and chelating agent,and the demulsification behavior of anion emulsified asphalt on rheological properties of CA paste were investigated.The results indicate that for the anionic emulsified asphalt clustering into demulsification in the salt solution the greater the cation valence state,the higher the cation concentration;the longer the mixing time,the more intense the anionic emulsified asphalt coagulation was.The cation released with cement hydration prompted the coagulation demulsification of anionic emulsified asphalt,which increased the internal friction of CA paste in viscous deformation,resulting in the loss the rheological property of CA paste.
Keywords：CA mortarcoagulationdemulsificationrheological propertymechanism
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 548-555 )