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Estimation of Performance and Pavement Life using National Highway Pavement Condition Index

NHPCI 지표를 활용한 공용성 추정과 수명 산정

  • 도명식 (국립한밭대학교 도시공학과) ;
  • 이용준 (국립한밭대학교 도시공학과) ;
  • 임광수 (국토해양부 서울지방국토관리청) ;
  • 권수안 (한국건설기술연구원 도로연구실)
  • Received : 2012.01.03
  • Accepted : 2012.09.03
  • Published : 2012.10.15

Abstract

PURPOSES: The new methodology is proposed for estimation of long-term performance and pavement life based on the national highway database in Daejeon area. Furthermore, this study tried to verify the applicability of performance estimation using NHPCI (National Highway Pavement Condition Index) on tendency of pavement deterioration as time goes by under Korean road environments. METHODS: Reliability theories are applied to estimate the mean life and to determine the appropriate distribution using 3 levels of traffic loads (high, medium, low) based on maintenance and rehabilitation history data for 15 years. RESULTS: As a result, Lognormal distribution is suitable for explanation of pavement lifetime in Daejeon area regardless of traffic loads. In addition, we found that the results of mean life and maintenance timing based on NHPCI for the pavement sections of 3 levels of traffic loads are available. CONCLUSIONS: Based on this study, it was found that mean life of high, medium and low levels of traffic loads are about 8.1 years, 12.2 years and 12.7 years, respectively. Higher level of traffic loads shorten the pavement mean life.

Keywords

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