Optimizing the Welding Parameters of Reinforcing Steel Bars

被引：14
|
作者：
Moustafa, Tamer [1 ]
Khalifa, Waleed [2 ]
El-Koussy, M. Raafat [2 ]
Abd El-Reheem, Nahed [2 ]
机构：
[1] Ezz Flat Steel, Ain Sukhna, Suez, Egypt
[2] Cairo Univ, Dept Met Engn, Giza 12613, Egypt
来源：
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING | 2016年 / 41卷 / 05期
关键词：
Rebar; Welding; Microstructure; Tensile; HAZ structure; Lap weld length; Butt; WELDED SPLICES; CORROSION; BEHAVIOR;
D O I：
10.1007/s13369-015-1929-x
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Welding is highly recommended for splicing concrete reinforcing bars in all concrete structures. SMAW lap-welded and butt-welded joints made from Tempcore and hot-rolled reinforcing steel bars were studied. The results give an insight into the effect of metallurgical structure and the chemical composition on the effective lap weld length of reinforcing steel bars. It was found that the hot-rolled bars gave shorter acceptable lap length than the Tempcore bars. This was because of the higher amount of pearlite/bainite phases in weld area. In the other hand, the HAZ hardening resulted in the most pronounced changes in ductility of hot-rolled joints. Preheating the hot-rolled bars up to 200 degrees C was insufficient to prevent the formation of HAZ hard phases.
引用
收藏
页码：1699 / 1711
页数：13
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