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http://dx.doi.org/10.4334/JKCI.2011.23.5.559

Evaluation of Minimum Extensibility Standard Requirements for Steel Reinforcement  

Lee, Jae-Hoon (Dept. of Civil Engineering, Yeungnam University)
Kim, Dong-Hyun (Cowi-Korea Co., Ltd.)
Choi, Jin-Ho (Dept. of Civil Engineering, Yeungnam University)
Publication Information
Journal of the Korea Concrete Institute / v.23, no.5, 2011 , pp. 559-567 More about this Journal
Abstract
Recently, many researches on high strength reinforcing steel have been conducted to construct optimum reinforced concrete structures. However, the studies have shown that high strength steel shows less elongation capacity than normal strength steel. Therefore, high strength reinforcing steel may not satisfy the minimum elongation requirement of current standards. Moreover, elongation measurements may be not standardized ones since each standard has its own requirements for minimum elongation and gage length. Therefore, the standards for reinforcing steel testing must be investigated to verify the validity of Korean Standard D 3504. This research aimed to compare the requirements for minimum elongation and gage length of the Korean, American, Japanese, European, and ISO Standards. Then, the study further investigated accuracy of the standards by tensile test of reinforcing steel. The study results showed that the Korean Standard has the strictest requirement. Based on the study results, the authors proposed modified minimum elongation requirements for general reinforcing steel and new requirements for seismic reinforcing steel.
Keywords
high-strength reinforcing steel; standard for reinforcing steel; extensibility; gage length; tensile test;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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