Trend Curve Optimal Control Model for Optimizing Pavement Maintenance Strategies Consisting of Various Treatments

This article describes how most literature on pavement maintenance optimization assumes only one type of maintenance treatment, such as an overlay, to be applicable and demonstrates solution procedures with simple cases of limited scopes. However, as overlays may not always be appropriate, depending on traffic loading/pavement situations, the objective of this article is to propose an optimization approach based on the trend curve optimal control model, to obtain optimal strategies possibly consisting of overlay, resealing, and reconstruction. The applicability of the solution procedure is demonstrated with several cases representing a variety of traffic loading/pavement situations. The solutions presented in this article indicate that an optimal maintenance strategy can consist of multiple types of treatments depending on the situation which illustrates the versatility of the proposed procedure.

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