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Συγκέντρωση παραμέτρων αντοχής διακοσμητικών λίθων από βάσεις δεδομένων καιστατιστική επεξεργασία τους

Achina Sofia

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Summary

The present thesis focuses on the collection and statistical analysis of mechanical and physical properties of decorative stones, with particular emphasis on marbles, granites, limestones and sandstones. The main objective was to analyze the main strength parameters, such as specific gravity, porosity, compressive strength and flexural strength, for each group of rocks, identifying the distributions that fit them. To achieve the objective, data collected from reliable databases and statistical processing was carried out using MATLAB software, with the help of the KStest (Kolmogorov-Smirnov test) distribution test. Through this method, the distribution corresponding to each property was determined and the percentage of fit of each distribution was calculated. In addition, the corresponding histograms were generated in Excel for each property according to the distribution obtained from the test.A further stage of the work involved conducting a correlation analysis between compressive strength (UCS) and other physical and mechanical properties (such as specific gravity, porosity and flexural strength) in order to examine the interaction of these parameters for different rocks, which allowed the calculation of Pearson, Spearman and Kendall correlation coefficients through the CougarStats software, thus providing a more complete picture of the relationship between the variables. The results of the analyses provide useful information for the categorization and evaluation of decorative stones, contributing to the optimization of their selection for various construction and decorative applications.This work contributes to a deeper understanding of the properties of decorative stones, providing tools for a better assessment of their behaviour in different construction and decorative applications, as well as for the selection of the most suitable materials according to the requirements of each project.

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