비파괴 밀도시험을 통한 아스팔트 콘크리트의 공극률 추정 연구
Estimation of Air Voids of Asphalt Concrete Using Non-destructive Density Testing
0
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
The air-void is known to be one of the influencing factors for estimating long-term performance of asphalt concrete. Most of all, confirming air voidor density of pavement layer is important for quality control of field compaction level of asphalt concrete pavement. In this study, a non-nuclear typenon-destructive density gage (NDDG) was used to estimate compacted air-voids of asphalt pavement as a non-destructive test method. Asphalt concreteslab specimens were prepared using 6 types of asphalt mixes in laboratory (lab) for lab NDDG test. Four different base structure materials were usedto find out if there were any differences due to the type of base structure materials. The actual air-voids and NDDG air-voids were measured from6 asphalt concrete slabs. Four sections of field asphalt pavements were tested using the NDDG, and actual air voids were also measured from fieldcores taken from the site where the NDDG air-void was measured. From lab and field experimental tests, it was found that the air-voids obtained byNDDG were not the same as the actual air-voids measured from the asphalt concrete specimen. However, it was possible to estimate air voids basedon the relationship obtained from regression analysis between actual and NDDG air voids. The predicted air-voids based on the NDDG air-voidsobtained from 50mm depth were found to be reliable levels with R2≒0.9. Therefore, it was concluded that the air-voids obtained from NDDG couldbe used to estimate actual air-voids in the field asphalt pavement with a relatively high coefficient of determination.
Abstract
The air-void is known to be one of the influencing factors for estimating long-term performance of asphalt concrete. Most of all, confirming air voidor density of pavement layer is important for quality control of field compaction level of asphalt concrete pavement. In this study, a non-nuclear typenon-destructive density gage (NDDG) was used to estimate compacted air-voids of asphalt pavement as a non-destructive test method. Asphalt concreteslab specimens were prepared using 6 types of asphalt mixes in laboratory (lab) for lab NDDG test. Four different base structure materials were usedto find out if there were any differences due to the type of base structure materials. The actual air-voids and NDDG air-voids were measured from6 asphalt concrete slabs. Four sections of field asphalt pavements were tested using the NDDG, and actual air voids were also measured from fieldcores taken from the site where the NDDG air-void was measured. From lab and field experimental tests, it was found that the air-voids obtained byNDDG were not the same as the actual air-voids measured from the asphalt concrete specimen. However, it was possible to estimate air voids basedon the relationship obtained from regression analysis between actual and NDDG air voids. The predicted air-voids based on the NDDG air-voidsobtained from 50mm depth were found to be reliable levels with R2≒0.9. Therefore, it was concluded that the air-voids obtained from NDDG couldbe used to estimate actual air-voids in the field asphalt pavement with a relatively high coefficient of determination.
참고문헌 (13)
- Allen, D. L., "Evaluation of non-destructive density gauges", Kentucky Transportation Center, ~ (2003)
- Evaluation of the nonnuclear density gauge for quality control of hot-mix asphalt, "Henault, J. W.", Connecticut Department of Transportation, 1~20, pp.SPR-2227 (2010)
- Hwang, S. D., "Improvement of asphalt pavement construction technology-management of field compaction", Journal of the Korean Society of Pavement Engineers, 6(2), pp.12~18 (2004)
- 김부일, "유전율 측정을 통한 아스팔트 콘크리트의 공극률 추정 연구", 한국도로학회논문집, 11(1), pp.95~104 (2009), 한국도로학회
- 김현철, "한국의 기온변화와 기온변동성에 대한 통계적 연구", Communications for Statistical Applications and Methods, 18(1), pp.1~12 (2011), 한국통계학회
- Development of road pavement construction quality management system for climate change, "Kwon, S. A.", Korea Institute of Construction Technology, 3~5 (2014)
- 김영민, "폴리우레탄 개질 아스팔트 바인더를 사용한 포트홀응급 보수재의 성능평가", 한국도로학회논문집, 17(1), pp.43~49 (2015), 한국도로학회
- 김영민, "다짐밀도 측정장비(Non-nuclear Type)를 사용한 현장 다짐밀도 평가", 한국도로학회논문집, 17(1), pp.51~58 (2015), 한국도로학회
- 이경미, "한국의 최근 10년의 기온과 강수 변화", 국토지리학회지, 45(2), pp.237~248 (2011), 국토지리학회
- Ministry of land, infrastructure and transport, "Guidelines for the production and construction of asphalt mixtures", 109~116 (2014)
- Roberts, F. L., "Hot mix asphalt materials, mixture design, and construction" (1996), Equipment and Construction
- Evaluation of non-nuclear gauges to measure density of hot-mix asphalt pavements, "Romero, P.", The University of Utah Department of Civil Environmental Engineering, 6~24 (2002)
- A working review of available non-nuclear equipment for determining in-place density of asphalt, "Sargand, S. M.", Ohio Research Institute for Transportation and Environment, 19~43, pp.FHWA (2005), OH-2005[DOI]