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http://dx.doi.org/10.7473/EC.2022.57.4.215

Influence Dispersing Agent on the Modifiers in the High-Penetration Asphalt  

Eun Kyoung Lee (Department of Pharmaceutical Biomedical Engineering, Cheongju University)
You Kyoung Kim (Department of Biomedical Science, Cheongju University)
Publication Information
Elastomers and Composites / v.57, no.4, 2022 , pp. 215-221 More about this Journal
Abstract
In this study, high-penetration asphalt with low greenhouse gas emissions was used in the asphalt mixing process to reduce the carbon emissions during the reaction due to its capacity to be produced even at low temperatures. In effect, cationic, anionic, and non-ionic dispersants were added and mixed in different feeding ratios, seeking an effective dispersion of the modifiers (SIS, PS, TPEE, and SEBS) into the high-penetration asphalt matrix and forming an asphalt binder with a melting point of 120 ℃. The compatibility of the modifiers and the high-penetration asphalt was examined using SEM and DSC techniques, and the role of NDP-1 as a dispersant was carefully investigated with respect to dissolution time. The analyses showed that: (1) the dispersibility of the asphalt binder is good when the non-ionic dispersant is used; (2) as the concentration of the non-ionic dispersant increases, the dissolution time decreases and the domain size contracts; (3) the ND70-PS has the shortest dissolution time, the lowest agglomeration rate, and a single Tg value.
Keywords
high-penetration asphalt; low greenhouse gas emissions; modifiers; dispersion; compatibility;
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Times Cited By KSCI : 2  (Citation Analysis)
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