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Accelerated Rusting of Reinforcing Bars: The Role of Manganese Alloying in Concrete Reinforcement Steel
The authors investigated corrosion behavior of four specimens, showing wide variation in their carbon content, exposed to atmosphere of Jamshedpur, India, for 3 years. Although the authors focused on atmospheric corrosion rate, significance of tensile properties of steel bars has not been considered while limiting manganese (Mn) criteria. The discusser suggests that the authors need to include tensile properties of reinforcement steel along with their findings regarding the Mn limit for reducing atmospheric corrosion. In India, Fe 500 or Fe 500D grades thermomechanically treated deformed bars are extensively used in the construction field. As per IS 1786, Mn content, derived from carbon equivalent relation, is permitted up to 1.02% by weight when welding is performed in reinforcement steel bars and wires. In summary, the 0.5% Mn limit in carbon steel reinforcement for reducing accelerated atmospheric rusting concluded by the authors should have been mentioned along with tensile properties for identifying their applications in India or elsewhere.
Accelerated Rusting of Reinforcing Bars: The Role of Manganese Alloying in Concrete Reinforcement Steel
The authors investigated corrosion behavior of four specimens, showing wide variation in their carbon content, exposed to atmosphere of Jamshedpur, India, for 3 years. Although the authors focused on atmospheric corrosion rate, significance of tensile properties of steel bars has not been considered while limiting manganese (Mn) criteria. The discusser suggests that the authors need to include tensile properties of reinforcement steel along with their findings regarding the Mn limit for reducing atmospheric corrosion. In India, Fe 500 or Fe 500D grades thermomechanically treated deformed bars are extensively used in the construction field. As per IS 1786, Mn content, derived from carbon equivalent relation, is permitted up to 1.02% by weight when welding is performed in reinforcement steel bars and wires. In summary, the 0.5% Mn limit in carbon steel reinforcement for reducing accelerated atmospheric rusting concluded by the authors should have been mentioned along with tensile properties for identifying their applications in India or elsewhere.
Accelerated Rusting of Reinforcing Bars: The Role of Manganese Alloying in Concrete Reinforcement Steel
ACI materials journal ; 114
2017
Article (Journal)
English
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