The influence of methods of concrete quality control by physical and mechanical parameters on the reliability of building structures
https://doi.org/10.37538/0005-9889-2023-5/6(619)-25-31
Abstract
Introduction. The construction technical control system evaluates the physical and mechanical properties of concrete on the base of testing a series of samples taken from a batch of concrete. It is necessary to take into account the influence of the control method on the quality of concrete structures and their reliability.
Aim. Creation of a technical control system that should eliminate the causes of the identified risks by reducing the impact of the identified causes.
Materials and methods. The control method affects the reliability of concrete structures being built and is evaluated from the point of view of choosing the number of samples and discarding the minimum strength values in the series. The results of the control of a series of concrete samples for 6 samples selected in such a way as to ensure compliance with the declared class when discarding 2 minimum sample values are compared.
Results. As a result of the analysis of the impact of the methodology on quality and reliability: class B turns out to be 2 steps lower than the prescribed one, the in-series coefficient of variation exceeds the permissible one by 8 %, and the reliability level is significantly lower by 36 %.
Conclusions. The conducted research shows an underestimation of the methodological component of material control, which can leave significant gaps in the system of technical control of construction products and does not allow to ensure the required level of reliability of structures.
About the Authors
Yu. A. Belentsov
Emperor Alexander I St. Petersburg State Transport University
Russian Federation
Russian Federation
Yuri A. Belentsov*, Dr. Sci. (Engineering), Professor of the “Building Materials and Technologies” Department, Emperor Alexander I St. Petersburg State Transport University, Saint Petersburg
e-mail: belents@mail.ru
D. A. Cherepanova
Emperor Alexander I St. Petersburg State Transport University
Russian Federation
Russian Federation
Daria A. Cherepanova, Quality Manager, Emperor Alexander I St. Petersburg State Transport University, Saint Petersburg
e-mail: cherepanova@pgups.ru
References
1. State Standard 18105-2010. Concrete. Rules for strength control and assessment. Moscow: Standartinform; 2012. (In Russian).
2. Efremov I.V., Rakhimova N.N. Reliability of technical systems and technogenic risk. Orenburg: OSU; 2013. (In Russian).
3. Raiser V.D. Optimization of structural reliability and human safety. Collection of scientific articles “Actual problems of research on the theory of structures” TSNIISK named after Koucherenko. 2009, vol. 1, pp. 22–31. (In Russian).
4. Belentsov Yu.A., Ilyinskaya G.G., Lesovik V.S. Improving the reliability of structures by control of the parameters of composite material. <i>Building materials</i>. 2011, no. 3, pp. 90–92. (In Russian).
5. Rzhanitsyn A.R. Theory of calculation of building structures for reliability. Moscow: Stroyizdat Publ.; 1978. 239 p. (In Russian).
6. State Standard 10180-2012. Concretes. Methods for strength determination using reference specimens. Moscow: Standartinform Publ.; 2018. (In Russian).
7. Raiser V.D. Theory of reliability of structures. Moscow: ASW Publishing House; 2010. 384 p. (In Russian).
8. Lantukh-Lyashchenko A.I. The concept of reliability in the Eurocode. <i>Mosti ta tuneli: theory, doslidzhennya, praktika</i>. 2014, no. 6, pp. 79–88. (In Russian).
9. NSR EN 1990-2011. EUROCODE 0: Fundamentals of design of structures. Moscow; 2011. (In Russian).
10. Handbook 2 reliability backgrounds partnership. Development of skills facilitating implementation of eurocodes. Leonardo da Vinci Pilot Project CZ/02/B/F/PP-134007. Prague, 2005, p. 254.
11. Egorov V.V., Belentsov Yu.A., Abu Khasan M.S., Kuprava L.R. Improving the quality control of the mechanical properties of concrete when using the complex control in two ways. <i>BST: Bulletin of Construction machinery</i>. 2019, no. 8, 2019, pp. 35–37. (In Russian).
12. SP 63.13330.2018. Concrete and reinforced concrete structures. General provisions. Moscow: Standartinform; 2019. (In Russian).
Review
For citations:
Belentsov Yu.A., Cherepanova D.A. The influence of methods of concrete quality control by physical and mechanical parameters on the reliability of building structures. Concrete and Reinforced Concrete. 2023;619(5/6):25-31. (In Russ.) https://doi.org/10.37538/0005-9889-2023-5/6(619)-25-31
Views:
150
Email this article 