期刊
PROCEEDINGS OF THE 5TH INTERNATIONAL SYMPOSIUM ON ASPHALT PAVEMENTS & ENVIRONMENT (APE)
卷 48, 期 -, 页码 264-273出版社
SPRINGER INTERNATIONAL PUBLISHING AG
DOI: 10.1007/978-3-030-29779-4_26
关键词
Reclaimed asphalt pavement; Soybean acidulated soapstock; Rejuvenator; Cracking performance; Rutting performance
类别
资金
- Indiana Soybean Alliance
In spite of its economic and environmental benefits, the use of reclaimed asphalt pavement (RAP) is limited due to the impact of aged binder on the performance of asphalt pavements. Currently, one of the most popular methods to mitigate the aged RAP binder is the addition of a rejuvenating agent. Such an agent acts to restore life to the aged binder thus making it less brittle. The main objective of this study is to evaluate a soybean-based byproduct as a RAP bio-rejuvenating agent. To achieve this objective, asphalt mixtures were designed containing various RAP types and content, and three different percentages of bio-rejuvenator. Test specimens of the various mixtures were produced and tested to determine complex modulus, flow number, and fatigue cracking characteristics. The results indicate that increasing the percentage of bio-rejuvenator improves the viscoelastic parameters and results in a significant improvement in fatigue cracking properties of asphalt mixtures containing RAP, but also slightly decreases rutting performance.
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