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01640 CORROSION BEHAVIOR OF CONCRETE REINFORCING BARS FROM DIFFERENT MANUFACTURING TECHNOLOGIES: A COMPARATIVE STUDY.

Picture for 01640 CORROSION BEHAVIOR OF CONCRETE REINFORCING
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Product Number: 51300-01640-SG
ISBN: 01640 2001 CP
Author: Tariq Mehmood, S. Niaz Ahsan, Hisham AI-Hamili and Adel AI-Buteri
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Traditionally the concrete reinforcing bars are produced by hot rolling process. However, some of the technologies use on-line water quenching systems to regulate the microstructure to achieve better mechanical properties. The chemical composition and the resultant microstructure depend upon the bar manufacturing technology and hence may influence the corrosion behavior of the bars. Previous studies conducted to evaluate the extent and mechanism of bar corrosion generally used the conventional hot rolled material with little information about the corrosion behavior of water quenched steel bars. This paper compares the corrosion behavior of the water quenched steel bars both in and outside concrete with that of conventional hot rolled bars. It is noted that while the water quenched steel bars develop early surface rusting in humid atmosphere, their corrosion resistance is better than that of conventional hot rolled material.
Traditionally the concrete reinforcing bars are produced by hot rolling process. However, some of the technologies use on-line water quenching systems to regulate the microstructure to achieve better mechanical properties. The chemical composition and the resultant microstructure depend upon the bar manufacturing technology and hence may influence the corrosion behavior of the bars. Previous studies conducted to evaluate the extent and mechanism of bar corrosion generally used the conventional hot rolled material with little information about the corrosion behavior of water quenched steel bars. This paper compares the corrosion behavior of the water quenched steel bars both in and outside concrete with that of conventional hot rolled bars. It is noted that while the water quenched steel bars develop early surface rusting in humid atmosphere, their corrosion resistance is better than that of conventional hot rolled material.
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ISBN: 00615 2000 CP
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Conference Paper - This paper describes the requirements of the standard, additional inspection points, and several uses of the standard in the field where clear specification language was imperative to successful project completion. NACE 5/SSPC-SP 12 standard confined to water jetting - which makes use of ultra-high pressure water that is nonabrasive.  Four levels of visible post-cleaning condition and three levels of non-visible condition are defined.
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