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http://dx.doi.org/10.12652/Ksce.2012.32.4D.345

Estimation of Life Expectancy and Budget Demands based on Maintenance Strategy  

Han, Dae-Seok (Osaka대학 토목공학전공)
Do, Myung-Sik (한밭대학교 도시공학과)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.32, no.4D, 2012 , pp. 345-356 More about this Journal
Abstract
Road pavement requires repetitive maintenance works to maintain satisfactory service level to the public. However, the repetitive maintenance works upon deteriorated pavement structure make negative effects to deterioration speed. It often leads to inefficient use of limited budget. For that reason, the pavements require reconstruction work to recover their original performance. Recently, construction demands in the Korean national highway have already been reached to maximum level, and the aged pavements start to demand much more reconstruction works. However, in the real world, road agencies have often been confused when they determine maintenance design for such aged road sections due to budget constraint. It is because there is no reliable long-term maintenance strategy that supports their decision making. To support their decision making, this paper aimed to suggest the best maintenance strategy considering changing process of pavement performance by repetitive maintenance works. As an analysis method, probability distribution and hazard function to estimate the life expectancy were adopted, and then the results were used for long-term life cycle cost analysis with deterministic or Monte-Carlo method under various scenarios. As an empirical study, the Korean national highway data that has long-maintenance history data since 1986 has been applied. Last, this paper considered quality assurance of maintenance work to improve maintenance quality. These could be important information as a part of long-term maintenance strategy of pavement.
Keywords
Pavement management; Life expectancy of maintenance work; Reliability and quality assurance; Reconstruction timing; Life cycle cost analysis; Korean national highway;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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