چکیده مقاله
Monitoring steel rebar corrosion plays a crucial role in evaluating the durability, service life, and performance of reinforced concrete structures This research investigates the Half Cell Potential and Ultrasonic testing for detecting the extent of rebar corrosion The samples studied included 9 beams and 9 columns of a reinforced concrete pier in Abadan, which have been exposed to the marine conditions of the Persian Gulf for 48 years The obtained data were evaluated using correlation analysis and regression modeling The results showed that 58 7% of the measured points had a Half Cell Potential of less than 350 mV, indicating a high probability of corrosion In the Ultrasonic test, a 48 5% reduction in the velocity of compression waves and a 27 8% reduction in shear waves were observed in the damaged areas, indicating a decrease in density and an increase in concrete porosity Based on the analytical results, the correlation between the electrochemical and dynamic indices of concrete showed R2 = 0 968 The combination of these two methods increased the accuracy of corrosion detection by 39 8% compared to individual evaluation The findings of this research emphasize the importance of combined non destructive methods in monitoring the health of reinforced concrete structures
کلیدواژهها
نویسندگان
Amir Hossein Derakhshan Nezhad
PhD Student, Department of Civil Engineering, Semnan University, Semnan, Iran
علی خیرالدین
Distinguished Professor, Department of Civil Engineering, Semnan University, Semnan, Iran
Seayf Allah Hemati
Assistant Professor, Department of Civil Engineering, Semnan University, Semnan, Iran
شیوه ارجاع
Derakhshan Nezhad, Amir Hossein and Kheyroddin, Ali and Hemati, Seayf Allah,1404,Monitoring the Health of Corroded Reinforced Concrete Rebars using Half-Cell Potential and Ultrasonic Methods,14th International Congress on Civil Engineering,Tehran
ارائهشده در
مجموعه مقالات چهاردهمین کنگره بین المللی مهندسی عمران29 مهر 1404 · تهران