PURPOSES: This study evaluated the effect of fog seal treatment utilizing an agricultural oil-based asphalt concrete sealant (ABCS) on the long-term performance of an asphalt pavement.
METHODS: Fog seal treatment using ABCS was applied on 800 m of the pavement section in the test section with a total length of 2,400 m; the remaining pavement section was not considered for this treatment. A series of laboratory and field tests were conducted on both sections, including a Marshall stability test, penetration test, viscosity test, skid resistance test, and pavement surface macrotexture test. In addition, the pavement condition index (PCI) was determined 8 years after the ABCS application to evaluate the effect of the ABCS treatment on the pavement’s long-term performance.
RESULTS : The ABCS-treated section exhibited a PCI of 75, whereas the non-treated section exhibited a value of 64. Furthermore, a MicroPAVERTM‚ pavement management system determined that the pavement deterioration rates (i.e., drops in PCI) were 3.6 and 5.1 per year for the ABCS-treated and non-treated sections, respectively.
CONCLUSIONS : The results of the series of laboratory and field tests revealed that the ABCS treatment increased the pavement performance life by approximately 3.5 years.

ABSTRACT
 1. INTRODUCTION
 2. MATERIALS
 3. EXPERIMENTAL PROGRAM
  3.1. Phase Ⅰ-Laboratory Test
  3.2. Phase Ⅱ-Field Test
  3.3. Phase Ⅲ-Long-Term Performance Evaluation
 4. RESULTS AND DISCUSSIONS
  4.1. Phase Ⅰ-Laboratory Test Results
  4.2. Phase Ⅱ-Field Test Results
  4.3. Phase Ⅲ-Long-Term Performance EvaluationResults
 5. CONCLUSIONS AND RECOMMENDATIONS
 REFERENCES

• Kyungwon Park(PaveTec Korea) | 박경원
• Michael Freisthler(Biobased Spray Systems)
• Cheolmin Baek(Korea Institute of Civil Engineering and Building Technology) | 백철민 Corresponding Author