Cracking of the concrete matrix in reinforced concrete due to the pressure of corrosion products of the reinforcement

Keywords

corrosion, reinforced concrete, fracture, modeling, linear elastic material, oxide layer, damage diagram.

Cite as

Kostin V. А., Laukhin D. V., and Nyrkova L. I. Cracking of the concrete matrix in reinforced concrete due to the pressure of corrosion products of the reinforcement. Physicochemical Mechanics of Materials. 2022. 58(6), 082-088.

Abstract

The processes of oxidation of metal fittings in reinforced concrete structures after a long period of operation were studied using mathematical modeling methods. B25 (M350) concrete is used in the calculations, which is widely used for the manufacture of mono­lithic foundations, floor slabs, columns, beams, monolithic walls and other responsible structures. It is found that the corrosion process is caused by the recovery of oxygen with the formation of an oxide layer, which causes gradual fracture of concrete, which is taken into account using a scalar damage model. The effect of the thickness of the oxide layer on the pressure, normal and tangential stresses at the reinforcement–concrete boundary is determined. The conditions under which the critical state of corrosion fracture of the con­crete structure cannot be reached have been determined. It is established that the degree of damage to the structure decreases with an increase in the diameter of the reinforcement, a decrease in the thickness of the oxide layer and the total oxygen content in the concrete structure.

References

1. A. M. Pavlikov, Reinforced Concrete Structures: Buildings, Structures and Their Parts: a Textbook [in Ukrainian], Poltava Technical University, Poltava (2017).
2. Yu. A. Klimov, and L.I. Kriveliov, “The latest technologies for creating reinforced concrete structures in transport construction,” Collection of science papers of the National Aviation University, Is. 1–2, 221–225 (2000).
3. M. Syed, M. Moeini, P. Okumus, N. Elhami-Khorasani, B. E. Ross, and M. C. B. Kleiss, “Analytical study of tessellated structuralarchitectural reinforced concrete shear walls,” Eng. Struct., 244, art. no. 112768 (2021).
4. W. Tahri, X. Hu, C. Shi, and Z. Zhang, “Review on corrosion of steel reinforcement in alkali-activated concretes in chloride-containing environments,” Construction and Building Mater., 293, art. no. 123484 (2021).
5. R. R. Hussain, A. Al-Negheimish, A. Alhozaimy, and D. D. N. Singh, “Corrosion characteristics of vanadium micro-alloyed steel reinforcement bars exposed in concrete environments and industrially polluted atmosphere,” Cement and Concrete Composites, 113, art. no. 103728, (2020).
6. I. Y. Prikhod’ko, E. V. Parusov, O. V. Parusov, I. N. Chuiko, and E. S. Klemeshov, “Elements of Technology for Producing Cold-Formed Rebar from C86D Steel Using an Idle Stand,” Steel in Translation, 50, Is. 7, 481–486 (2020).
7. S. I. Gubenko, A. B. Sychkov, E. V. Parusov, A. I. Denisenko, A. N. Zavalishchin, “Corrosive Damage Close to Nonmetallic Inclusions in Bearing Steels,” Steel in Translation, 48, Is. 3, 197–201 (2018).
8. E. V. Parusov, G. D. Sukhomlin, S. I. Gubenko, A. B. Sychkov, A. I. Denisenko, and G. Y. Kamalova, “Evolution of the defect structure of pearlitic steel in cold deformation,” Steel in Translation, 48, Is. 7, 472–477 (2018).
9. E. V. Parusov, S. I. Gubenko, A. B. Sychkov, I. N. Chuiko, L. V. Sagura, and G. Y. Kamalova, “Structural Evolution of Thin-Plate Pearlite in Wire-Blank Production,” Steel in Translation, 49, Is. 5, 350–356 (2019).
10. A500C valves: technical characteristics and differences from A-III valves. https://www.stroymetall.ru/stati/osobennosti-armatury-a500s/
11. E. J. F. Dickinson, H. Ekström, and E. Fontes, “COMSOL Multiphysics®: Finite element software for electrochemical analysis. A mini-review,” Electrochemistry Communications, 40, 71–74 (2014).
12. P. Grassl, and M. Jirásek, “Damage-plastic model for concrete failure,” Int. J. of Solids and Structures, 43, Is. 22–23, 7166–7196 (2006).
13. Corrosion Module. Application Library Manual. https://doc.comsol.com/5.3/doc/com.comsol.help.corr/CorrosionApplicationLibraryManual.pdf
14. S. N. Alekseyev, F. M. Ivanov, S. Modry, and P. Kissel, Durability of Reinforced Concrete in Aggressive Environments [in Russian], Stroiizdat, Moscow (1990).
15. S. N. Leontovich, E. N. Polonina, and E. A. Sadoskaya, Prediction of the Durability of Reinforced Concrete Structures under the Combined Effect of Carbonation and Chloride Aggression and their Restoration [in Russian], Belarusian National Techn. Univ., Minsk (2021).