PURPOSES : This study focuses on the evaluation of interface performance with varying surface texture and tack coat application in an asphalt overlay.
METHODS : The evaluation is carried out in two phases: tracking test and interface bond strength test. Using an image processing tool, tracking test is conducted to evaluate the susceptibility of the tack coat material to produce excessive tracking during application. Using the pull-off test method, the bond strength test is performed to determine the ability of the interface layer to resist failure.
RESULTS: Results show that the underseal application yields less tracking compared to other applications. However, the bond strength is barely within the minimum acceptable value. On the other hand, RSC-4 produces higher bond strength for all surface types, but the drying time is long, which produces excessive tracking.
CONCLUSIONS: While underseal application may be suitable for a trackless condition, the bond strength is less appealing compared to the rest of the tack applications available. RSC-4 demonstrated a high and consistent bond strength performance, but more time is required for drying to avoid excessive tracking. Tack coat application and surface type combination produce varying results. Therefore, these should be considered when selecting suitable future tack coat application options.

1. 서론
 2. 연구배경 및 목적
  2.1. 실험계획
  2.2. 재료
  2.3. 실험 방법 및 이론
 3. 실험 결과
  3.1. Trackless 성능
  3.2. Pull-off 시험
 4. 결론 및 향후연구
 REFERENCES

• 김동규(중앙대학교 토목공학과 석사과정) | Kim Dong kyu
• 황현식(중앙대학교 토목공학과 석사과정) | Hwang Hyun sik
• Jabonero Christopher(중앙대학교 토목공학과 박사과정)
• 류성우(한국도로공사 도로교통연구원 선임연구원) | Ryu Sung woo 교신저자
• 조윤호(중앙대학교 공과대학 사회기반시스템공학부 교수) | Cho Yoon ho