Hauv emulsified asphalt, pH tus nqi kuj muaj qee yam cuam tshuam rau tus nqi demulsification. Ua ntej kawm txog kev cuam tshuam ntawm pH ntawm tus nqi demulsification ntawm emulsified asphalt, demulsification mechanisms ntawm anionic emulsified asphalt thiab cationic emulsified asphalt tau piav qhia raws li.

Cationic emulsified asphalt demulsification tso siab rau tus nqi zoo ntawm nitrogen atom hauv pawg amine hauv cov qauv tshuaj ntawm asphalt emulsifier kom muaj kev sib raug zoo nrog cov nqi tsis zoo ntawm cov aggregate. Yog li, cov dej hauv emulsified asphalt yog nyem tawm thiab volatilized. Lub demulsification ntawm emulsified asphalt tiav. Vim hais tias qhov kev taw qhia ntawm pH-kho cov kua qaub yuav ua rau muaj kev nce nqi zoo, nws ua rau qeeb ntawm kev sib xyaw ntawm cov nqi zoo uas nqa los ntawm asphalt emulsifier thiab cov aggregate. Yog li, pH ntawm cationic emulsified asphalt yuav cuam tshuam rau tus nqi demulsification.
Tus nqi tsis zoo ntawm anionic emulsifier nws tus kheej hauv anionic emulsified asphalt yog sib koom ua ke nrog cov nqi tsis zoo ntawm cov aggregate. Lub demulsification ntawm anionic emulsified asphalt cia siab rau adhesion ntawm asphalt nws tus kheej mus rau aggregate kom nyem tawm dej. Anionic asphalt emulsifiers feem ntau tso siab rau cov pa atoms los ua hydrophilic, thiab oxygen atoms tsim hydrogen bonds nrog dej, ua rau cov dej evaporation qeeb. Cov nyhuv hydrogen bonding yog txhim kho nyob rau hauv acidic tej yam kev mob thiab tsis muaj zog nyob rau hauv alkaline tej yam kev mob. Yog li ntawd, qhov siab dua pH, qhov qeeb demulsification tus nqi hauv anionic emulsified asphalt.