| Summary: | 碩士 === 正修科技大學 === 營建工程研究所 === 103 === A proficiency test (PT) is simply a method to validate a particular measurement process. By interlaboratory comparisons, PT is used to determine the performance of individual laboratories for specific tests or measurements, and to monitor the continuing performance of laboratories. The sieve analysis of fine and coarse aggregates is used to assess the particle size distribution in order to determine compliance with design, production control requirements, and verification specifications. In this study, the statistical methods introduced by ISO 13528 were adopted in data analysis of proficiency testing for sieve analysis of fine and coarse aggregates. According to the analysis results in test items, such as ‘the amount of material finer than 75 μm’, ‘Fineness Modulus (FM)’ and ‘Percent passing No. 200’, the anomalies of proficiency testing were discussed, and the overall performance of the test items from participant laboratories were compared.
Overall, the examination results were fine in the homogeneity checks of samples. As for the interlaboratory comparison of proficiency testing performance, the anomaly proportions from participant laboratories were higher in the three test items (i.e. ‘the amount of material finer than 75 μm’, ‘FM’, and ‘Percent passing No. 200’). Moreover, the anomaly proportions of Z-score were higher among laboratories than those within individual laboratories.
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