PURPOSES : The process of extracting and recovering an asphalt binder from an asphalt mixture is harmful to the human body and can affect the properties of the asphalt binder owing to the presence of residual solvent quantities. This study was conducted to determine the properties of aged asphalt binders based on rejuvenator content without extracting and recovering the asphalt binders using RAP mortar.
METHODS : After extracting and recovering aged binders from waste asphalt, a rejuvenator was added at a certain rate to evaluate the physical and rheological properties of the binder based on the added amount.
RESULTS : When the rejuvenator content was greater than necessary, the absolute viscosity was not properly measured owing to the behavior of the rejuvenator. The phase angle was measured to be almost 90°, thus indicating that it acted as a liquid . In addition, the shear strain and nonrecovery compliance also increased significantly.
CONCLUSIONS : If an excess rejuvenator quantity was added to the aged binder, the absolute viscosity was not properly measured, the phase angle was measured to be almost 90°, and the shear strain increased significantly. It is also necessary to conduct the same tests on different types of RAPs to ensure that the results of this study are reasonable.

ABSTRACT
1. 서론
2. 실험 계획 및 방법
    2.1. 노화 바인더 시험
    2.2. 절대점도 시험
    2.3. DSR을 통한 PG등급시험
    2.4. DSR을 통한 MSCR 시험
    2.5. 직접인장시험
3. 시험 결과
    3.1. 절대점도 시험
    3.2. DSR을 통한 PG등급시험
    3.3. DSR을 통한 MSCR 시험
    3.4. 직접인장시험
4. 결론
REFERENCES

• 이선우(전북대학교 토목공학과 석사) | Lee Seonwoo
• 임치수(전북대학교 토목공학과 박사수료) | Lim Chisu
• 장대성(전북대학교 토목공학과 박사수료) | Jang Daeseong
• 이재준(전북대학교 토목공학과 방재연구센터 교수) | Lee Jaejun Corresponding author