Study on SBS Modified Asphalt Emulsion and Aggregate Adhesion of CA Mortar

Abstract:

The influence of pH of emulsified asphalt, the kinds and content of emulsifiers and stabilizers on asphalt-aggregate adhesion have been investigated in this paper. Results show that the pH of the emulsified asphalt has great impact on asphalt-aggregate adhesion by way of the effect of pH on asphalt, asphalt-aggregate adhesion is worst when asphalt emulsion at pH≈4, which is close to the isoelectric point of asphalt, the bigger the zeta potential absolute value of emulsified asphalt, the better the asphalt-aggregate adhesion property. Effect of emulsifiers on asphalt-aggregate adhesion is complex, the best dosage is at 0.2%. The addition of organic stabilizers are superior to inorganic stabilizers to improve the asphalt-aggregate adhesion, the best dosage is at 0.4%. Effect of mixing emulsifier and stabilizer is better than single-doped emulsifier and stabilizer.

• Periodical: Advanced Materials Research (Volume 413)
• Pages: 467-471
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.413.467
• Online since: December 2011
• Authors: Bao Ju Liu, Shao Ying Ning, Yuan Xia Yang
• Keywords: Asphalt-Aggregate Adhesion, CA Mortar, Emulsifier, Stabilizer

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