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• 고강도철근의 용접 및 열처리영향에 관한 연구

– 저자 : 박영수, 이종호, 김성배, 이창남, 양재근, 김상섭

This study was conducted to know about effect of welding of high strength reinforcing bars. Welding of reinforcing bars shall be performed with heat treatment according to carbon equivalent. AWS D1.4(Structural Welding Code – Reinforcing Steel) provides that the preheat requirements of reinforcing bars shall be considered according to size of reinforcing bars when carbon equivalent exceed the standard limit. In the study we examined tensile tests of reinforcing bars with preheating, post weld heat treatment, and none of heat treatment. Test results were evaluated according to the criteria of yield strength, tensile strength and elongation with KS D 3054. SD500W and SD500 reinforcing bars were used in the tests.

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• 인장시험에 의한 고강도철근 (500Mpa)의 용접특성에 관한 연구

– 저자 : 김성배, 이창남, 양재근, 김상섭

This study conducted to know about effect of welding of high strength reinforcing bar. Welding of reinforcing bars was performed with heat treatment according to carbon equivalent. AWS D1.4(Structural Welding Code – Reinforcing Steel) provides that the preheat requirements of reinforcing bar was considered according to size of reinforcing bar when carbon equivalent exceeds the standard limit. In the study, the tensile tests of reinforcing bar with preheating, post weld heat treatment, and none of heat treatment were examined. Test results were evaluated according to the criteria of yield strength, tensile strength, and elongation with KS D 3054. SD500W and SD500 reinforcing bar were used in the tests.