Setting Deadlines for the Manufacture of Monolithic Concrete Structures During Construction and Technical Examinations
- Authors: Bondarev B.A.1, Kozomazov V.N.1, Bondarev A.B.1, Kozomazov A.V.1, Zhidkov V.K.2
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Affiliations:
- Lipetsk State Technical University
- Tambov State Technical University
- Issue: No 6 (2024)
- Pages: 68-72
- Section: Concretes: science and practice
- URL: https://gynecology.orscience.ru/0585-430X/article/view/635104
- DOI: https://doi.org/10.31659/0585-430X-2024-825-6-68-72
- ID: 635104
Cite item
Abstract
The use of special knowledge in the field of building materials science is increasingly in demand in modern legal proceedings when conducting judicial construction and technical examinations in order to obtain an evidence base, in particular, on determining the timing of construction work. It is known that when conducting expert studies, it is possible to assess the increase in concrete strength due to the continued hydration of cement and a decrease in the basicity (pH) of the surface layer of concrete due to the processes of carbonization of cement stone in interaction with the atmosphere. The paper presents proven mathematical dependencies that make it possible to link the temporary change in the strength of concrete and the carbonation of the surface layer of concrete laid in monolithic structures with the structural parameters of concrete and its durability. These dependencies give the construction expert a fundamental opportunity to determine the age of concrete by changing the specified characteristics of concrete and, consequently, to determine the time period in which the construction structure was created from this concrete. Thus, expert determination of the production time of monolithic concrete structures is possible and is based on conducting research to establish the actual strength of concrete and determine the depth of its surface carbonation at the time of expert research. The described methodology for determining the timing of construction work on the manufacture of monolithic concrete structures in building conditions was used when conducting forensic examination.
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About the authors
B. A. Bondarev
Lipetsk State Technical University
Author for correspondence.
Email: gr.kontrol@gmail.com
Doctor of Sciences (Engineering)
Russian Federation, LipetskV. N. Kozomazov
Lipetsk State Technical University
Email: gr.kontrol@gmail.com
Doctor of Sciences (Engineering)
Russian Federation, LipetskA. B. Bondarev
Lipetsk State Technical University
Email: lnsp-48@mail.ru
Candidate of Sciences (Engineering)
Russian Federation, LipetskA. V. Kozomazov
Lipetsk State Technical University
Email: kozomazov.alexander@gmail.com
Bachelor
Russian Federation, LipetskV. K. Zhidkov
Tambov State Technical University
Email: gidkov_vova_1999@mail.ru
Postgraduate Student
Russian Federation, TambovReferences
- Alekseev S.N., Ivanov F.M., Modry S., Shissl’ P. Dolgovechnost’ zhelezobetona v agressivnykh sredakh [The durability of reinforced concrete in aggressive environments]. Moscow: Stroyizdat. 1990. 320 p.
- Shalyi E.E., Leonovich S.N., Kim L.V. Degradation of reinforced concrete structures of marine works from the combined impact of carbonation and chloride aggression. Stroitel’nye Materialy [Construction Materials]. 2019. No. 5, pp. 67–72. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2019-770-5-67-72
- Leonovich S.N. Mechanics of durability of structural concrete: a new approach to the phenomenon of degradation. Part 1. Shrinkage. Stroitel’nye Materialy [Construction Materials]. 2024. No. 1–2, pp. 74–78. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2024-821-1-2-74-78
- Langner E.A., Shikhovtsov A.A., Tsarev A.A., Petrosyan V.V. Modern technologies for accelerating the strength gain of concrete. Vestnik Evrazijskoj nauki. 2020. Vol. 12, No. 5, p. 36. (In Russian).
- Karpenko N.I., Yarmakovsky V.N., Karpenko S.N., Kadiev D.Z. About the diagram method of determination of parametric points of microcracking formation process in concrete elements under axial compression in conditions of low negative temperatures action. Zhilishchnoe Stroitel’stvo [Housing Construction]. 2019. No. 6, pp. 3–9. (In Russian). DOI: https://doi.org/10.31659/0044-4472-2019-6-3-9
- Marinin A.N., Garibov R.B., Ovchinnikov I.G. Soprotivlenie zhelezobetonnyh konstrukcij vozdejstviyu hloridnoj korrozii i karbonizacii [Resistance of reinforced concrete structures to chloride corrosion and carbonization]. Saratov: IC “Rata”, 2008. 200 p.
- Goglev I.N., Loginova S.A. A new indicator method for determining carbonization zones in concrete and reinforced concrete structures. Vestnik BSTU im. V.G. Shukhova. 2022. No. 8, pp. 8–16. (In Russian). DOI: https://www.doi.org/10.34031/2071-7318-2022-7-8-8-16.
- Alekseev S.N. Korrozionnaya stojkost’ zhelezobetonnyh konstrukcij v agressivnoj promyshlennoj srede [Corrosion resistance of reinforced concrete structures in an aggressive industrial environment]. Moscow: Stroyizdat, 1976. 205 p.
- Stepanova V.F., Falikman V.R. Modern problems of ensuring durability of reinforced concrete structures. BST: Bjulleten’ stroitel’noj tehniki. 2015. No. 2 (966), pp. 55–61. (In Russian).
- Fedorov P.A., Anvarov B.R., Latypova T.V., Anva- rov A.R., Latypov V.M. Carbonization of concrete. What is the formula to calculate the depth of corrosion? ALITinform: Cement. Beton. Suhie smesi. 2010. No. 4–5 (16), pp. 54–60. (In Russian).
- Vasiliev A. A. Raschetno-eksperimental’naya model’ karbonizacii betona [Calculation and experimental model of concrete carbonization]. Gomel: BelGUT, 2016. 263 p.
- Vasiliev A.A. Assessment of the maximum corrosion indicators of concrete of compressive strength class C20/25. Nauchnoe obozrenie. Tekhnicheskie nauki. 2023. No. 2, pp. 5–10. (In Russian).
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