지표투과레이더와 적외선카메라를 이용한 아스팔트 포장 시공 관리 방법

다국어 초록 (Multilingual Abstract)

PURPOSES : The objective of this study is to propose a quality control and quality assurance method for use during asphalt pavement construction using non-destructive methods, such as ground penetrating radar (GPR) and an infrared (IR) camera.
METHODS: A 1.0 GHz air-coupled GPR system was used to measure the thickness and in situ density of asphalt concrete overlay during the placement and compaction of the asphalt layer in two test construction sections. The in situ density of the asphalt layer was estimated based on the dielectric constant of the asphalt concrete, which was measured as the ratio of the amplitude of the surface reflection of the asphalt mat to that of a metal plate. In addition, an IR camera was used to monitor the surface temperature of the asphalt mat to ensure its uniformity, for both conventional asphalt concrete and fiber-reinforced asphalt (FRA) concrete.
RESULTS: From the GPR test, the measured in situ air void of the asphalt concrete overlay gradually decreased from 12.6% at placement to 8.1% after five roller passes for conventional asphalt concrete, and from 10.7% to 5.9% for the FRA concrete. The thickness of the asphalt concrete overlay was reduced from 7.0 cm to 6.0 cm for the conventional material, and from 9.2 cm to 6.4 cm for the FRA concrete. From the IR camera measurements, the temperature differences in the asphalt mat ranged from 10℃ to 30 ℃ in the two test sections.
CONCLUSIONS: During asphalt concrete construction, GPR and IR tests can be applicable for monitoring the changes in in situ density, thickness, and temperature differences of the overlay, which are the most important factors for quality control. For easier and more reliable quality control of asphalt overlay construction, it is better to use the thickness measurement from the GPR.

목차 (Table of Contents)

• 1. 서론
• 2. 시공 중 품질관리를 위한 비파괴시험
• 3. 현장 시험
• 4. 현장 시험 결과
• 5. 결론
• 감사의 글
• REFERENCES

참고문헌 (Reference)

1 Sebesta, S., "Using Infrared and High-Speed Ground-Penetrating Radar for Uniformity Measurements on New HMA Layers" 2013

2 Sebesta, S., "Using Infrared Imaging and Ground-Penetrating Radar to Detect Segregation in Hot-Mix Overlays" 2002

3 Leng, Z., "Prediction of In-Situ Asphalt Mixture Density Using Ground Penetrating Radar: The Theoretical Development and Field Verification" University of Illinois at Urbana-Champaign , 2011

4 Yoo, P.J., "Physical Characteristics of Glassfiber reinforced asphalt mixture" Proceedings of 2014 Korea Society of Road Engineers Fall Conference : 78 ~ , 2014

5 Sebesta, S., "New Infrared and Radar Systems for Detecting Segregation in Hot-Mix Asphalt Construction" 2006

6 Al-Qadi, I. L., "Measuring layer thickness with GPR - Theory to practice" Construction and Building Materials 19 : 763 ~ 772 , 2005

7 Saarenketo, T., "Measuring Electromagnetic Properties of Asphalt for Pavement Quality Control and Defect Mapping"

8 Shangguan, P., "Innovative Approach for Asphalt Pavement Compaction Monitoring with Ground-Penetrating Radar : 79 ~ 87" 2013

9 Chen, D. -H., "Estimating the Hot-Mix Asphalt Air Voids from Ground Penetrating Radar" NDT&E International 68 : 120 ~ 127 , 2014

10 Chang, C. -H., "Dielectric modeling of asphalt mixtures and relationship with density" Journal of Transportation Engineering 137 (2) : 104 ~ 111 , 2011

11 Hwang, S.D., "Development of Construction Quality Control Standard and Maintenance Guideline to Prevent Pothole in Asphalt Pavements" Korea Institute of Construction and Building Technology , 2014

12 Solla, M., "Approach to Identify Cracking in Asphalt Pavement using GPR and Infrared Thermographic Methods: Preliminary Findings" NDT&E International 62 : 55 ~ 65 , 2014

13 Lahouar, S., "Approach to Determining In Situ Dielectric Constant of Pavements: Development and Implementation at Interstate 81 in Virginia : 81 ~ 87" 2002

14 Milovanovi, B., "Application of Infrared Camera for Quality Control during Paving" Presented at 2nd International Conference on Road and Rail Infrastructure , 2012