Developing an Integrated Decision Making System for the Assessment of Cleaning Interventions on Marble Architectural Surfaces

In this work, the development of an integrated decision-making system for the assessment of cleaning interventions on marble architectural surfaces is presented. The suggested system resulted by the incorporation of a fuzzy logic model into GIS and its architecture includes: (a) a GIS based graphical user interface for features and attributes retrieval, management comparison, analysis and correlation; displaying the application site of the historic building under investigation, where decay diagnosis and pilot cleaning interventions took place; (b) a database, that contains all the required attribute data sets for the operation of the decision-making system, that is the recorded physicalchemical characteristics of marble surfaces, during different time periods (before and after cleaning); (c) a fuzzy logic model (Mamdani type) as solver, using for input variables cleaning assessment criteria, whereas output parameter is the cleaning performance index. This platform enables the constant response in relation to the cleaning performance under predefined assessment parameters and acceptance threshold levels in a pointed spatial entity and environmental conditions; developing an integrated decision-making system for the assessment of cleaning interventions. The suggested system is demonstrated in practice on marble surfaces of a historic building in Athens, Greece.