Performance Based Properties of Rejuvenated Severe Aged Asphalt Binder

• Main Authors: Li-ChunLi, 李利淳
• Other Authors: Shih-Hsien Yang
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/13501046076997121706

碩士 === 國立成功大學 === 土木工程學系 === 102 === Purpose of this study is to investigate the relationship between regenerated asphalt binder and chemical composition in the performance characteristics of the rheological behavior, and to assess the effectiveness of the properties of severe aged asphalt binder. The study using the three levels of aged asphalts recovered from RAP materials were used to blend with two types of virgin asphalt (AC10 and AC5) and two types of rejuvenator (RA75 and RA25). Test results are showed that the chemical and rheological properties of rejuvenated severely aged binder were evaluated using gel permeation chromatography (GPC) and dynamic shear rheometer (DSR). The molecular size distribution of rejuvenated RAB show that rejuvenators used in this study can re-balance the proportion among large, medium and small molecular components in the rejuvenated RAB. However, the PDI can still clearly distinguish between virgin binder and rejuvenated RAB. Two performance parameters were used to evaluate binder’s aged induced damage potential as well as permanent rutting potentials. Glover-Rowe damage zone shows promising results to distinguish between severely aged binders, virgin binder as well as rejuvenated binders. The MSCR test was performed to obtain rutting potential parameter Jnr and results show that all rejuvenated aged binders have less Jnr compare to the control virgin binder.