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Pregled bibliografske jedinice broj: 509457

Zbornik radova

Autori: Grandić, Davor; Bjegović, Dubravka; Štimac Grandić Ivana
Naslov: Deflection of reinforced concrete beams simultaneously subjected to sustained load and reinforcement corrosion
Izvornik: Congress Papers ; Paper No 177 / G. C. Giuliani (ur.). - Milano : SEWC , 2011. 1-12.
Skup: Structural Engineers World Congress 2011
Mjesto i datum: Como, Italija, 04-06.04.2011.
Ključne riječi: reinforcement corrosion; beam deflections; serviceability parameters; experimental research
Sažetak:
The bearing capacity and serviceability of reinforced concrete structures can be severe deteriorated by steel reinforcement corrosion. Recent research results show that deterioration of serviceability of structures due to increasing of deflections begins much earlier than structural collapse. The results presented in this paper are a part of a comprehensive experimental research. In this experiment, chloride induced corrosion of reinforcement embedded in reinforced concrete beam specimens is accelerated with alternation of dry and wet periods with salt water in an environmental chamber. Such alternation of wet and dry periods simulates natural process of reinforcement corrosion in chloride environment. Beam specimens were simultaneously subjected to sustained load and reinforcement corrosion. In this paper the method for computing the long-term deflections of beams exposed to reinforcement corrosion is proposed. The serviceability parameters which consider effect of localized reinforcement chloride corrosion on tension stiffening and reduced stiffness of corroded reinforcement were introduced. Mentioned serviceability parameters are expressed as a function of corrosion state of reinforcement and evaluated by results of experimental research. Corrosion state of reinforcement can be determined by measuring of reinforcement corrosion rates during the time of exposure of reinforced concrete members to corrosive environment. The relationship between corrosion state of reinforcement and deflections is established and evaluated by test results.
Vrsta sudjelovanja: Predavanje
Vrsta prezentacije u zborniku: Cjeloviti rad (više od 1500 riječi)
Vrsta recenzije: Međunarodna recenzija
Projekt / tema: 082-0822161-2159
Izvorni jezik: ENG
Kategorija: Znanstveni
Znanstvena područja:
Građevinarstvo
Puni text rada: 509457.Final_paper_ID177_-_Grandic.pdf (tekst priložen 26. Stu. 2013. u 20:15 sati)
Upisao u CROSBI: dgrandic@gradri.hr (dgrandic@gradri.hr), 7. Tra. 2011. u 20:53 sati



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