A Comparative Analysis of Time- and Condition-Based Approaches for Imperfect Maintenance of Natural Stone Claddings

Abstract

This study discusses the advantages and limitations of adopting time-based maintenance (TBM) and condition-based maintenance (CBM) strategies for natural stone claddings. In this study, an imperfect model for the system under stochastic deterioration is adopted, considering historical data about the degradation patterns of 203 natural stone claddings. This study introduces a probabilistic maintenance optimization method and a life cycle cost analysis framework to determine the optimal strategies for CBM and TBM strategies. The advantages of CBM over TBM are highlighted. CBM demonstrates the potential to achieve higher reliability levels while minimizing maintenance costs compared to TBM. CBM allows a more controlled and planned approach to maintenance, where interventions are strategically carried out based on the specific needs and condition of natural stone claddings. An optimized TBM policy is proposed, which offers a practical and reliable solution for managing the natural stone claddings. It strikes a balance between maintenance requirements, costs, and performance, ensuring the durability and performance of the claddings while minimizing unnecessary interventions.