Experimental Study of the Stress-Strain State of Reinforced Concrete Beams Strengthened with Carbon Fiber

Number of journal: 4-2023
Autors:

Suleimanov A.M.,
Shakirov A.R.

DOI: https://doi.org/10.31659/0585-430X-2023-812-4-10-17
УДК: 666.922

 

AbstractAbout AuthorsReferences
To develop methods for predicting the durability of reinforced concrete bendable elements strengthened with external carbon fiber reinforcement systems (CBA), it is necessary to determine the mechanisms of their stress-strain state development. Within the framework of the experimental study, the research methodology, requirements for the experimental installation and for the production of samples were developed. Using the strain gauge method, it was possible to identify the features of creep development of a reinforced concrete beams strengthened with CBA. It is fixed that the nature of the development of deformations on the surface of concrete and carbon fiber is different. Thus, it was revealed that the creep of the samples is due to a kind of slip of the adhesive layer between concrete and carbon fiber. The dependence of creep on changes in temperature influences is determined. The stepwise effect of temperature makes it possible to increase the creep rate of epoxy adhesives. The results obtained served as the basis for the development of a method for predicting the creep of external reinforcement systems using carbon fiber.
A.M. SULEIMANOV, Doctor of Sciences (Engineering), Professor, (This email address is being protected from spambots. You need JavaScript enabled to view it.),
A.R. SHAKIROV, Engineer (graduate student) (This email address is being protected from spambots. You need JavaScript enabled to view it.)

Kazan State University of Architecture and Engineering (1, Zelenaya Street, 420043, Kazan, Russian Federation)

1. Lesovik R.S., Klyuev S.S. Expansion of reinforcement of yellow concrete columns corner fabric. Innovative technological materials; collection of doctors of the International Scientific and Practical Conference. Belgorod, October 11–12. Part. 2, pp. 3–5. (In Russian).
2. SP 164.1325800.2014 “Reinforcement of reinforced concrete structures with composite materials”. 2015. (In Russian).
3. Klyuev S.V., Rubanov V.G., Pavlenko V.I., Guryanov Yu.V., Ginzburg A.V. Calculation of carbon fiber reinforced building structures. Bulletin of BSTU named after V.G. Shukhov. 2013. No. 5, pp. 54–56. (In Russian).
4. Shilin A.A., Pshenichny V.A., Kartuzov D.V. Vneshnee armirovanie zhelezobetonnyh konstrukcij kompozicionnymi materialami [External reinforcement of reinforced concrete structures with composite materials]. Moscow: Stroyizdat, 2007. 181 p.
5. Bokarev S.A., Smerdov D.N. Experimental studies of bent reinforced concrete elements reinforced with composite materials. Izvestiya vuzov. Stroitel’stvo. 2010. No. 2, pp. 112–124. (In Russian).
6. Klyuev S.V. Strengthening and restoration of structures using carbon fiber–based composites. Beton i zhelezobeton [Concrete and reinforced concrete]. 2012. No. 3, pp. 23–26. (In Russian).
7. Nerovnykh A.A. Improving the methodology for assessing the load capacity of reinforced concrete superstructures of railway bridges reinforced with composite materials. Diss… Candidate of Sciences (Engineering). Novosibirsk. 2013. 201 p. (In Russian).
8. Ovchinnikov I.G., Valiev Sh.N., Ovchinnikov I.I., Zinoviev V.S., Umirov A.D. Issues of reinforcement of reinforced concrete structures with composites: 1. Experimental studies of the features of reinforcement by composites of bent reinforced concrete structures. Internet-zhurnal «Naukovedenie». 2012. No. 4. http://naukovedenie.ru/PDF/13tvn412.pdf (In Russian).
9. Ovchinnikov I.G., Valiev Sh.N., Ovchinnikov I.I., Zinoviev V.S., Amirov A.D. Analysis of problems of reinforcement of reinforced concrete structures with composite materials. Transport development in the regions of Russia: problems and prospects. Materials of the II All-Russian Conference with international participation. Kirov. 2012, pp. 49–52. (In Russian).
10. Ovchinnikov I.I., Ovchinnikov I.G., Chesnokov G.V., Mikhalkin E.S. Analysis of experimental studies on strengthening reinforced concrete structures with polymer composite materials. Part 1. Domestic experiments with static loading. Internet-zhurnal «Naukovedenie». 2016. Vol. 8. No. 3. http://naukovedenie.ru/PDF/24TVN316.pdf (In Russian).
11. Bonacci, J.F., Maalej, M. Externally bonded fiber-reinforced polymer for rehabilitation of corrosion damaged concrete beams. ACI Structural Journal. 2000. 97 (5), pp. 703–11.
12. Denvid Lau, Hoat Joen Pam. Experimental study of hybrid FRP reinforced concrete beams. Engineering Structures. 2010. Vol. 32, pp. 3857–3865.
13. Sólrún Lovísa Sveinsdóttir. Experimental research on strengthening of concrete beams by the use of epoxy adhesive and cement-based bonding material. School of Science and Engineering at Reykjavk University. Thesis in Civil Engineering for the degree of Master of Science. 2012. 108 p.
14. Bokarev S.A., Nerovnykh A.A., Smerdov D.N. Resistance of bent reinforced concrete structures reinforced with composite materials based on carbon fiber to the effects of negative and positive temperatures. Innovative factors of Transsib development at the present stage. International scientific and practical conference dedicated to the 80th anniversary of the Siberian State University of Railways. Abstracts of the conference. Part I. Novosibirsk. 2012, pp. 127–128. (In Russian).
15. Bokarev S.A., Kostenko A.N., Smerdov D.N., Nerovnykh A.A. Experimental studies at low and elevated temperatures of reinforced concrete samples reinforced with polymer composite materials. Internet-zhurnal «Naukovedenie». 2013. No. 3 (16), pp. 1–9. (In Russian).
16. Durability tests of reinforced concrete structures reinforced with the FibARM system. «Kompozit». 2016. 35 p. (In Russian).
17. Ovchinnikov I.I., Ovchinnikov I.G., Chesnokov G.V., Mikhalkin E.S. Analysis of experimental studies on strengthening reinforced concrete structures with polymer composite materials. Part 2. Influence of temperature. Internet-zhurnal «Naukovedenie». 2016. Vol. 8. No. 4 http://naukovedenie.ru/PDF/01TVN416.pdf (In Russian).
18. Smerdov D.N. Assessment of the load-bearing capacity of reinforced concrete bridge spans reinforced with composite materials. Diss. Candidate of Sciences (Engineering). Novosibirsk. 2010. 158 p. (In Russian).
19. Smerdov M.N. Investigation of the bearing capacity of reinforced concrete structures of hydraulic engineering buildings and structures reinforced with composite materials, taking into account temperature factors. Diss. Candidate of Sciences (Engineering). Yekaterinburg. 2015. 135 p. (In Russian).
20. Salamaa A.E., Ghanema G.M., Abd-Elnabya S.F., El-Hefnawyb A.A., AbdElghaffarb M. Behavior of thermally protected RC beams strengthened with CFRP under dual effect of elevated temperature and loading. HBRC Journal. Vol. 8. Iss. 1. 2012, pp. 26–35.
21. Burke P.J., Bisby L.A., Green M.F. Effects of elevated temperature on near surface mounted and externally bonded FRP strengthening systems for concrete. Cement and Concrete Composites. 2013. Vol. 35. Iss. 1, pp. 190–199 https://doi.org/10.1016/j.cemconcomp.2012.10.003
22. Petkova D. and Donchev T. Residual strength of CFRP strengthened beams after heating and cooling. In: Concrete Solutions 2011. 4th International Conference on Concrete Repair. 26–28 September 2011. Dresden, Germany.
23. Liu S, Pan Y, Li H, Xian G. Durability of the bond between CFRP and concrete exposed to thermal cycles. Materials (Basel). 2019. 8; 12(3):515. doi: 10.3390/ma12030515
24. Djouani Fatma, Connan Carole, Delamar Michel, Chehimi Mohamed, Benzarti Karim. Cement paste-epoxy adhesive interactions. Construction and Building Materials. 2011. Vol. 25, pp. 411–423. DOI: 10.1016/j.conbuildmat.2010.02.035
25. Selivanova E.O., Smerdov D.N. Experimental studies of creep in composite materials reinforcing bent reinforced concrete elements. Academic Bulletin of UralNIIproekt RAASN. 2017. No. 2. (In Russian).
26. Suleymanov A.M., Shakirov A.R., Agliullina A.F., Starovoitova I.A. Investigation of short-term and long-term strength of adhesive adhesive joints for the device of external reinforcement systems of building structures. Izvestiya KGASU. 2018. No. 4 (46). (In Russian).
27. Houhou N., Benzarti Karim, Quiertant M., Chataigner Sylvain, Fléty A., Marty C. Analysis of the nonlinear creep behavior of concrete/FRP-bonded assemblies. Journal of Adhesion Science and Technology. 2014. 28, pp. 1345–1366. DOI: 10.1080/01694243.2012.697387

For citation: Suleimanov A.M., Shakirov A.R. Experimental study of the stress-strain state of reinforced concrete beams strengthened with carbon fiber. Stroitel’nye Materialy [Construction Materials]. 2023. No. 4, pp. 10–17. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2023-812-4-10-17


Print   Email