Published: Građevinar 60 (2008) 12
Paper type: Professional paper
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Interlaboratory testing of stone aggregate grading
Abstract
Results of interlaboratory testing of the stone aggregate fraction 0 – 4 mm, analysed by variance analysis method (ANOVA), are presented. The experiment was planned with the three-factor staggered- nested model. The repeatability and reproducibility variances, and intermediate precision variances among ranges of results obtained under various reproducibility conditions, were estimated. The estimation of intermadiate variance is significant for determining the influence of heterogeneity of aggregates at each level of testing.
Keywordsinterlaboratory testing, variance analysis method, repeatability, reproducibility, stone aggregate, grading