아스팔트포장 잔존수명 예측 사례 연구 = A Case Study for the Estimation of Remaining Lives of Asphalt Pavements

다국어 초록 (Multilingual Abstract)

This study presents a case study of condition evaluation of various asphalt pavement sections to estimate performance lives. The pavement surface conditions including cracking and rutting are first evaluated using a automatic pavement analyzer, ARAN. HPCI(Highway Pavement Condition Index) values are estimated using the pavement surface distress data. It is observed from the pavement distress survey that the major distress type of the sections is top-down cracking. The modulus value of each pavement layer is back-calculated from the defection data obtained from a FWD(Falling Weight Deflectometer) and compared with the laboratory measured dynamic modulus values. Remaining lives of the various pavement sections are estimated based on a mechanistic-empirical approach and AASHTO 1993 design guide. The structural capacities of the all pavement sections based on the two approaches are strong enough to maintain the pavement sections for the rest of design life. Since the major distress type is top-down cracking, the remaining lives of the pavement sections are estimated based on HPCI and existing performance database of highway pavements. To evaluate the causes of premature pavement distress, various material properties, such as air void, asphalt binder content, aggregate gradation, dynamic modulus and fatigue resistance, are measured from the field cores. It is impossible to accurately estimate the binder contents of field samples using the ignition method. It is concluded from the laboratory tests that the premature top down cracking is mainly due to insufficient compaction and inadequate aggregate gradation.

참고문헌 (Reference)

1 건설교통부, "한국형 포장설계법 개발과 포장성능 개선방안 연구(2단계 2차년도)" 2006

2 건설교통부, "한국형 포장설계법 개발과 포장성능 개선방안 연구(1단계 최종보고서)" 2004

3 임영환, "일반국도 PMS의 Project Level 개선과 Network Level 개발연구" 2003

4 이현종, "골재입도와 SBS 개질재가 아스팔트 혼합물의 점탄성 물성 및 피로 공용성에 미치는 영향" 2 (2): 129-144, 2000

5 로드코리아, "고속도로 포장 시험시공구간 현장 공용성 평가 및 추적조사 시스템 구축 용역" 2005

6 Hyun Jong, Lee, "Performance Evaluation of High Modulus Asphalt Mixtures for Long Life Asphalt Pavements" 2007

7 "NCHRP 1-37A Draft Test Method A1, "Standard Test Method for Dynamic Modulus of Asphalt Concrete Mixtures and Master curves""

8 Zube, E., "Compaction Studies of Asphalt Concrete Pavement as Related to the Water Permeability Test" 1962