Verification of effectiveness of chip seal as a pavement preventive maintenance treatment using LTPP data

It is hypothesised that maintenance treatments should be applied in the preventive mode before pavements display significant amounts of distress in order to be more cost-effective. The objective of this study was to verify the concept of preventive maintenance by examining the long-term effectivenes...

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Bibliographic Details
Published in:The international journal of pavement engineering 2014-11, Vol.15 (10), p.879-888
Main Authors: Mamlouk, Michael S., Dosa, Matild
Format: Article
Language:English
Subjects:
Benefit cost analysis
benefit-cost ratio
chip seal
Chips
Civil engineering
Effectiveness studies
Initial conditions
Integrated circuits
Life extension
maintenance effectiveness
Mathematical models
pavement preservation
Pavements
Performance evaluation
Preventive maintenance
Regression analysis
relative benefit
Seals
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Summary:It is hypothesised that maintenance treatments should be applied in the preventive mode before pavements display significant amounts of distress in order to be more cost-effective. The objective of this study was to verify the concept of preventive maintenance by examining the long-term effectiveness of chip seal treatment in four climatic zones in the USA using the long-term pavement performance database. Pavement sections were categorised into smooth, medium and rough pavements, based upon initial condition (IC) as indicated by the international roughness index. Pavement performance of treated and untreated sections was collectively modelled using exponential regression analysis. Effectiveness was evaluated in terms of life extension, relative benefit and benefit-cost ratio. The results showed that preventive maintenance is cost-effective. The life extension, relative benefit and benefit cost ratio were highest for sections whose IC was smooth at the time of treatment. Chip seal treatment effectiveness showed no correlation to climatic conditions or to traffic levels.
ISSN:1029-8436
1477-268X
DOI:10.1080/10298436.2014.893318