AbstractAbout AuthorsReferences
The necessity of actualization (revision) of normative documents and strength characteristics of carbon fabric used as a composite material to increase the bearing capacity of reinforced concrete structures, such as beams, floor slabs, columns, is presented. It is proposed to adopt the normative resistance to destruction of carbon fiber not by the strength of the original fiber, as it is offered by the manufacturers of carbon fabric, but by the results of the test of carbon fiber in accordance with GOST 25.601–80 “Calculations and strength tests. Methods of mechanical testing of composite materials with a polymer matrix (composites). (Method of testing of flat samples for tension at normal, high and low temperatures)” with a confidence probability of 0.95 in a certified laboratory. When testing samples, it is advisable to take into account not the thickness of the sample, but the calculated thickness of the carbon fabric corresponding to the amount of carbon fiber in the cross section of the sample. The proposed method for calculation of the normative resistance to destruction makes it possible to avoid erroneous decisions on strengthening of reinforced concrete structures at their aging or at restoration of structures after fires or seismic impacts.
S.V. NIKOLAEV1 , Doctor of Sciences (Engineering), Scientific Head (This email address is being protected from spambots. You need JavaScript enabled to view it.);
A.I. SERDYUK2 , Engineer;
Yu.G. KHAYUTIN1 , Doctor of Sciences (Engineering);
A.K. SHREYBER1 , Doctor of Sciences (Engineering), (This email address is being protected from spambots. You need JavaScript enabled to view it.)
A.I. SERDYUK2 , Engineer;
Yu.G. KHAYUTIN1 , Doctor of Sciences (Engineering);
A.K. SHREYBER1 , Doctor of Sciences (Engineering), (This email address is being protected from spambots. You need JavaScript enabled to view it.)
1 AO “TSNIIEP ZHILISHCHA” (9, bldg. 3, Dmitrovskoye Shosse, Moscow, 127434, Russian Federation)
2 OOO “IPTS InterAqua” (5, bldg. 1, Sevanskaya Street, Moscow, 127463, Russian Federation)
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2. Chernyavsky V.L., Khayutin Yu.G. Stroitel’stvo i rekonstrukciya zdanij i sooruzhenij gorodskoj infrastruktury [Construction and reconstruction of buildings and structures of urban infrastructure]. Moscow: ASV, 2011. 321 p.
3. Starovoitova I.A., Semenov A.N., Zykova E.S., Khozin V.G., Suleimanov A.M. Modified adhesive binders for external reinforcement of building structures. Part 1. Requirements for adhesives. Technological characteristics. Stroitel’nye Materialy [Construction Materials]. 2017. No. 11, pp. 50–54. (In Russian).
4. Wagner E.S. Strengthening of reinforced concrete structures with composite materials. Dostizheniya vuzovskoj nauki. 2015. No. 15, pp. 119–123. (In Russian).
5. Suleimanov A.M., Zykova E.S., Starovoitova I.A., Semenov A.N. Modified adhesive binders for external reinforcement of building structures. Part 2. Physical and mechanical characteristics of adhesives. Stroitel’nye Materialy [Construction Materials]. 2017. No. 12, pp. 64–67. (In Russian).
6. Bykov A.A., Rumyantsev S.D., Birin A.S. Experimental study of the strength and deformation characteristics of reinforced concrete beams reinforced with carbon fiber reinforced plastic. Vestnik Permskogo nacional’nogo issledovatel’skogo politekhnicheskogo universiteta. Prikladnaya ehkologiya. Urbanistika. 2016. No. 2 (22), pp. 112–126. (In Russian).
7. Klyuev S.V., Guryanov Yu.V. External reinforcement of bent fibro-concrete products by carbon fiber. Inzhenernostroitel’nyj zhurnal. 2013. No. 1 (36), pp. 21–26. (In Russian).
8. Gusev B.V., Falikman V.R. Concrete and reinforced concrete in the era of sustainable development. Promyshlennoe i grazhdanskoe stroitel’stvo. 2016. No. 2, pp. 30–38. (In Russian).
9. Esipov S.M. Composite materials for strengthening building structures. In the collection. “Education, science, production”. Belgorod: BGTU im V.G. Shukhov. 2015, pp. 2475–2479.
10. Gribanov A.S., Lukin M.V., Strekalkin A.A., Sergeva A.N. Investigation of the strength and deformation of compressed bending elements reinforced with composite materials. BST: Byulleten’ stroitel’noj tekhniki. 2018. No. 4 (1004), pp. 40–42. (In Russian).
11. Tusnin A.R., Shchurov E.O. Experimental studies of glued joints of elements made of steel and carbon composite materials. Promyshlennoe i grazhdanskoe stroitel’stvo. 2017. No. 7, pp. 69–73. (In Russian).
12. Esipov S.M. Analysis and Prospects of Strengthening of Concrete Blocks by Composite Materials. Nacional’naya Associaciya Uchenyh. 2015. No. 7–2 (12), pp. 61–65. (In Russian).
For citation: Nikolaev S.V., Serdyuk A.I., Khayutin Yu.G., Shreyber A.K. About designation of normative characteristics of composite materials for strengthening of building structures by external reinforcement. Stroitel’nye Materialy [Construction Materials]. 2018. No. 7, pp. 8–11. DOI: 10.31659/0585-430Х-2018-761-7-8-11 (In Russian).