Abstract
Due to traffic loading and environmental conditions, pavements deteriorate over time. Other factors that may affect pavement performance are material properties and construction practices. However, it is important for road users to have the road network at a certain acceptable level. Typically, pavement functional indices, such as Pavement Condition Index (PCI), have been conspicuously utilized to determine which type of pavement maintenance/rehabilitation (M/R) should be applied for a specific pavement of a certain condition. Many researchers concluded that pavement surface condition, in some cases, does not reflect the condition of the underlying layers. Others argued that the treatment decisions based on the functional indices are sometimes overestimated or underestimated. This has galvanized many researchers to consider other indices, among of them are structural indices such as Structural Condition Index (SCI). Many studies recapped that the structural indices lead to more effective M/R decisions. Thus the current research aims to propose a more practical procedure for selecting the most appropriate M/R decision based not only on the functional indices as many highway agencies do but also on the existing structural condition of the degenerated pavement. To develop such procedure, data from 8 Long Term Pavement Performance pavement test sections were evaluated functionally and structurally and the decision was taken based on both functional and structural conditions. The proposed procedure is found to yield reasonable M/R decisions as compared to the use of either one of the indices.
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Abd El-Raof, H.S., Abd El-Hakim, R.T., El-Badawy, S.M., Afify, H.A. (2020). General Procedure for Pavement Maintenance/Rehabilitation Decisions Based on Structural and Functional Indices. In: Badawy, S., Chen, DH. (eds) Recent Developments in Pavement Engineering. GeoMEast 2019. Sustainable Civil Infrastructures. Springer, Cham. https://doi.org/10.1007/978-3-030-34196-1_2
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DOI: https://doi.org/10.1007/978-3-030-34196-1_2
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