Identification and analysis of the significance of sources of uncertainty in estimating the sand size modulus
https://doi.org/10.21285/2227-2917-2026-2-369-378
EDN: RGVADQ
Abstract
The purpose of this work is to develop and test an approach to assessing the uncertainty of measuring the sand size modulus based on identifying significant sources of uncertainty to ensure the reliability of quality control results and compliance with the requirements of regulatory documents. The research is aimed at developing an effective methodology for estimating uncertainty, which is necessary to improve the accuracy and reliability of control measures. To achieve this goal, an approach was applied in accordance with GOST 34100.3-2017/ISO/IEC Guide 98-3:2008. It included identifying potential sources of uncertainty in the process of determining the sand size modulus, and classifying them into random and systematic ones. To quantify the significance of these sources, a variance analysis based on a planned experiment was used. The dispersion analysis allowed us to establish that the most significant source of uncertainty is the heterogeneity of the material, which explains 96.3% of the total dispersion of the results of determining the sand size modulus. The human factor is also statistically significant, but its contribution is significantly less. The equipment used did not have a statistically significant effect on the variance of the results. The obtained results are illustrated using statistical histograms. The study showed the significant role of sand heterogeneity as the main source of uncertainty of type A. To reduce the total uncertainty, it is necessary to manage the "Material" factor by deeply studying the characteristics of sand that cause variability and, taking this into account, the introduction of a quality control system for incoming sand shipments.
About the Authors
T. A. Lebedeva
Bratsk State University
Russian Federation
Competing Interests:
Russian Federation
Tatiana A. Lebedeva, Cand. Sci. (Eng.), Associate Professor, Associate Professor of the Department of Building Structures and Construction Technologies
Author ID: 646031
40 Makarenko St., Bratsk 665709
Competing Interests:
The authors declare no conflict of interests regarding the publication of this article.
A. M. Daminova
Bratsk State University
Russian Federation
Competing Interests:
Russian Federation
Anastasiya M. Daminova, Cand. Sci. (Eng.), Associate Professor of the Department of Building Structures and Construction Technologies
Author ID: 641376
40 Makarenko St., Bratsk 665709
Competing Interests:
The authors declare no conflict of interests regarding the publication of this article.
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For citations:
Lebedeva T.A., Daminova A.M. Identification and analysis of the significance of sources of uncertainty in estimating the sand size modulus. Izvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost. 2026;16(2):369-378. (In Russ.) https://doi.org/10.21285/2227-2917-2026-2-369-378. EDN: RGVADQ
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