RC beams with an middle phase of reinforcement damage

• Autorzy: Blikharskyy Yaroslav , Khmil Roman , Selejdak Jacek , Katunský Dušan , Blikharskyy Zinoviy

Identyfikatory

DOI

10.2478/czoto-2024-0020

• Języki publikacji: EN

Abstrakty

EN

This article presents the results of tests of real-size reinforced concrete beams with damaged A500C class reinforcement from 20 to 18 mm in diameter. To achieve this goal, 4 reinforced concrete beams with dimensions of 2100x180x140 mm were manufactured, two of them were control beams and two beams with damaged working fittings from 20 to 18 mm in diameter. The microhardness of the reinforcement with a diameter of 20 mm of class A500C was previously determined and it was established that the outer layer of the reinforcement is thermally strengthened. For heat-strengthened reinforcement, there is a weakening of the physical and mechanical characteristics over time, since corrosion of the surface strengthened layer can occur, as well as local weakening occurs in places of welding, which can be a source of damage formation and changes in the stress-strain state in this section. To establish the real stress-strain state of the reinforcement, tests were conducted on rods with an initial diameter of 20 mm and damaged from 20 to 18 mm, and a decrease in the physical and mechanical characteristics of the reinforcement was established. The next stage of the research was the testing of control and damaged reinforced concrete beams. As a result of the tests, it was established that the reduction of the bearing capacity occurs not only due to the reduction of the cross-section and, accordingly, the cross-sectional area of the working reinforcement, but also due to the reduction of the physical and mechanical characteristics of the reinforcement. it was found that reducing the transverse diameter of the reinforcement reduces the moment when the reinforcement flow is reached by 43%, and the moment when the most compressed concrete fiber is reached by 36%.

Słowa kluczowe

EN

reinforced concrete beams; actual size of samples; bending; damage; thermal-strengthened reinforcement

PL

belki żelbetowe; rzeczywisty rozmiar próbek; zginanie; uszkodzenia; wzmocnienie termiczne

• Wydawca: De Gruyter
• Czasopismo: System Safety : Human - Technical Facility - Environment
• Rocznik: 2024
• Tom: Vol. 6, iss. 1
• Strony: 184--191
• Opis fizyczny: Bibliogr 23 poz., rys., tab.

Twórcy

autor

Blikharskyy Yaroslav

• Lviv Polytechnic National University, Ukraine

• https://orcid.org/0000-0002-3374-9195

autor

Khmil Roman

• Lviv Polytechnic National University, Ukraine

• https://orcid.org/0000-0001-7578-8750

autor

Selejdak Jacek

• Czestochowa University of Technology, Poland

• https://orcid.org/0000-0001-9854-5962

autor

Katunský Dušan

• Technical University of Kosice, Slovakia

• https://orcid.org/0000-0002-6436-5792

autor

Blikharskyy Zinoviy

• Czestochowa University of Technology, Poland

• https://orcid.org/0000-0002-4823-6405

Bibliografia

• 1.Andriichuk, O., Yasiuk, I., Uzhehov, S., Palyvoda, O., 2021. Experimental Research of Strength Characteristics of Steel Fiber Reinforced Concrete Gutters and Modeling of Their Work Using the Finite Element Method. Lecture Notes in Civil Engineering, 100, 1-8. DOI: 10.1007/978-3- 030-57340-9_1
• 2.Blikharskyy, Y., Selejdak, J., Bobalo, T., Khmil, R., Volynets, M., 2021. Influence of the percentage of reinforcement by unstressed rebar on the deformability of pre-stressed RC beams. Production Engineering Archives, 27(3), pp. 212-216. DOI: 10.30657/pea.2021.27.28
• 3.Blikharskyy, Z., Selejdak, J., Blikharskyy, Y., Khmil, R., 2019. Corrosion of Reinforce Bars in RC Constructions, System Safety: Human - Technical Facility - Environment, 1(1), 277-283, DOI: 10.2478/czoto-2019-0036
• 4.Bobalo, T., Blikharskyy, Y., Kopiika, N., Volynets, M., 2021. Influence of the Percentage of Reinforcement on the Compressive Forces Loss in Pre-stressed RC Beams Strengthened with a Package of Steel Bars. Lecture Notes in Civil Engineering, 2021, 100, 53-62. DOI: 10.1007/978-3-030-57340-9_7
• 5.Brachaczek W, Gałuszka, A., 2023. A. Repair of concretes in the underwater part of a water barrage. Construction of Optimized Energy Potential, 12(1), 116-123. DOI: 10.17512/bozpe.2023.12.13
• 6.Dmytrenko, Y., Genzerskiy, Y., Yakovenko, I., Bakulin, Y., 2023. Strength analysis of normal crosssections of reinforced concrete structures in uniaxial bending by Wood-Armer method in LIRA SAPR software. AIP Conference Proceedings, 2678, 020006. DOI: 10.1063/5.0118680
• 7.Dmytrenko, Y., Yakovenko, I., Fesenko, O., 2016. Strength of eccentrically tensioned reinforced concrete structures with small eccentricities by normal sections. Scientific Review Engineering and Environmental Sciences, 30(3), 424-438. DOI: 10.22630/PNIKS.2021.30.3.36
• 8.Dorofeyev, V., Pushkar, N., 2023. The Bearing-Capacity of Precast Beams with Vertical Contact Plane. Lecture Notes in Civil Engineering, 290, 67-75. DOI: 10.1007/978-3-031-14141-6_7
• 9.Katunský, D., Katunská, J., Tóth, S., 2015. Possibility of choices industrial hall object reconstruction. International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM, 2(5), 389-396.
• 10.Kos, Ž., Gotal Dmitrović, L., Klimenko, E., 2017. Developing a model of a strain (deformation) of a damaged reinforced concrete pillar in relation to a linear load capacity, Tehnički glasnik, 11(4), 150-154, https://hrcak.srce.hr/190990
• 11.Koteš, P., Vavruš, M., Jošt, J., Prokop, J., 2020. Strengthening of concrete column by using the wrapper layer of fibre reinforced concrete, Materials, 13(23), 1-21, 5432, DOI: 10.3390/ma13235432
• 12.Koteš, P., Vavruš, M., Raczkiewicz, W., 2022. Innovative strengthening of RC columns using a layer of a fibre reinforced concrete, Acta Polytechnica CTU Proceedings, 33, 309-315, DOI: 10.14311/APP.2022.33.0309
• 13.Koteš, P., Zahuranec, M., Vavruš, M., 2023. Diagnostic and Design of Reconstruction of Building Váhostav, Lecture Notes in Civil Engineering, 322, 165-174, DOI: 10.1007/978-3-031-26879- 3_13
• 14.Lenkovskiy, T.M., Kulyk, V.V., Duriagina, Z.A., Kovalchuk, R.A., Topilnytskyy, V.H., Vira, V.V., Tepla, T.L., 2017. Mode I and mode II fatigue crack growth resistance characteristics of high tempered 65G steel. Archives of Materials Science and Engineering, 84(1), 34-41. DOI: 10.5604/01.3001.0010.3029
• 15.Lipiński, T., 2021. Investigation of corrosion rate of X55CrMo14 stainless steel at 65% nitrate acid at 348 K, Production Engineering Archives, 27(2), 108-111, DOI: 10.30657/pea.2021.27.13
• 16.Lipiński, T., Wach, A., 2020. Influence of inclusions on bending fatigue strength coefficient the medium carbon steel melted in an electric furnace, Production Engineering Archives, 26(3), 88- 91, DOI: 10.30657/pea.2020.26.18
• 17.Ostash, O.P., Muravs'Kyi, L.I., Voronyak, T.I., Kmet', A.B., Andreiko, I.M., Vira, V.V., 2011. Determination of the size of the fatigue prefracture zone by the method of phase-shifting interferometry. Materials Science, 46(6), 781-788. DOI: 10.1007/s11003-011-9353-1
• 18.Pietrzak, A., 2024. Effect of polypropylene fiber structure and length on selected properties of concrete. Construction of Optimized Energy Potential, 13(1), 78-88. DOI: 10.17512/bozpe.2024.13.09
• 19.Stechyshyn, M., Sanytskyy, M., Poznyak, O., 2015. Durability properties of high volume fly ash self-compacting fiber reinforced concretes. Eastern-European Journal of Enterprise Technologies, 2015, 3(11), pp. 49-53, DOI: 10.15587/1729-4061.2015.44246
• 20.Świt, G., Dzioba, I., Ulewicz, M., Lipiec, S., Adamczak-Bugno, A., Krampikowska, A., 2023. Experimental-numerical analysis of the fracture process in smooth and notched V specimens. Production Engineering Archives, 29(4), pp.444-451. DOI: 10.30657/pea.2023.29.49
• 21.Vatulia, G.L., Smolyanyuk, N.V., Shevchenko, A.A., Orel, Y.F., Kovalov, M.O., 2020. Evaluation of the load-bearing capacity of variously shaped steel-concrete slabs under short term loading. IOP Conference Series: Materials Science and Engineering, 1002(1), 012007. DOI: 10.1088/1757-899X/1002/1/012007
• 22.Grydzhuk J., Chudyk I., Slabyi O., Mosora Y., Kovbaniuk M., Krynke M., 2022. Mathematical modeling of the stress-strain state of the annular preventer seal using the theory of reinforced shells. Production Engineering Archives, 28(4), 375-380. DOI: 10.30657/pea.2022.28.46
• 23.Zahuranec, M., Koteš, P., Kraľovanec, J., 2023. The Influence of the Prestressing Level of the Fully Threaded Anchor Bar on the Corrosion Rate, Buildings, 13(7), 1592, DOI: 10.3390/buildings13071592

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).