PURPOSES : The numeric-based Highway Pavement Management System (HPMS), along with an advanced three-dimensional pavement condition monitoring profiler vehicle (3DPM), in South Korea has presented remarkable advancements in pavement management since the early 2000. Based on these results, visual distress on pavement surfaces can be easily detected and analyzed. Additionally, the entire expressway pavement surface conditions in South Korea can be easily monitored using the current graphical user interface-based advanced information graphic (AIG) approach. Therefore, a critically negative pavement section can be detected and managed more easily and efficiently. However, the actual mechanical performance of the selected pavement layer still needs to be investigated in a more thorough manner not only to provide more accurate pavement performance results but also to verify the feasibility of the current 3DPM and AIG approaches. In this study, the low-temperature performance of the selected asphalt pavement layer section was evaluated to further verify and strengthen the feasibility of the current 3DPM and AIG approaches developed by the Korea Expressway Corporation. METHODS : Based on 3DPM and AIG approach, the positive and negative-riding-quality road sections were selected, respectively. The asphalt material cores were extracted from each section then bending beam rheometer mixture creep test was performed to measure their low-temperature properties. Based on the experimental results, thermal stress results were computed and visually compared. RESULTS : As expected, the asphalt material from the negative driving performance section presented a poorer low-temperature cracking resistance than that from the positive driving performance section. CONCLUSIONS : Current 3DPM equipment can successfully evaluate expressway surface conditions and the corresponding material performance quality. However, more extensive experimental studies are recommended to verify and strengthen the findings of this study

1. Introduction
2. Research objective
3. Research target selections: selecting specifiedpavement section
4. Asphalt mixture test set up
5. Background theory on computation
6. Data analysis
7. Summary and conclusion
ACKNOWLEDGMENTS

• YoungOh Jho(Member · General manager · Road Korea, Dep. of Pavement Management System) | 조영오
• KiHoon Moon(Member · Principal Researcher · Korea Expressway Corporation Pavement Research Division, 208-96, Dong Budaero 922, Dong Tan, Hwa Sung city, Gyunggi do 18489, Korea) | 문기훈 Corresponding Author
• DueckSu Sohn(Member · Principal Researcher · Korea Expressway Corporation Pavement Research Division, 208-96, Dong Budaero 922, Dong Tan, Hwa Sung city, Gyunggi do 18489, Korea) | 손덕수