ISSN: 2734-9438
Website: www.jomc.vn
Evaluation of the longitudinal reduction in reinforcing steel diameter due to corrosion in experimental reinforced concrete beams using a statistical model
Abstract
Corrosion of steel reinforcement is one of the main issue of reduced load-bearing capacity and durability of reinforced concrete structures. In this study, the degree of reduction in steel reinforcement diameter due to corrosion was evaluated by accelerated corrosion testing on reinforced concrete beams labeled D21, D22, D23, and D24. After the corrosion process was complete, the steel bars were removed, the corrosion products were cleaned, and the remaining diameter was measured at various locations along the length of the steel bars. The data were processed using statistical methods, frequency plots were constructed, and normal distribution analysis was performed to evaluate the characteristics of the reduction in diameter of Φ12 and Φ16 steel bars in the beams. The results showed that the reduction in steel reinforcement diameter was uneven along the longitudinal direction of the beams, with Φ16 steel bars exhibiting a higher average reduction value and greater dispersion compared to Φ12 steel bars. The research results provide important experimental data for evaluating the degree of corrosion and remaining load-bearing capacity of corroded reinforced concrete beams.
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