Torsional Strengthening of RC Beams with Continuous Spiral Near-Surface Mounted Steel Wire Rope

被引：0
作者：
Nasih Habeeb Askandar
Abdulkareem Darweesh Mahmood
机构：
[1] Sulaimani Polytechnic University,Halabja Technical College of Applied Sciences
[2] Salahaddin University,Department of Civil Engineering
来源：
International Journal of Concrete Structures and Materials | 2020年 / 14卷
关键词：
reinforced concrete beam; torsional behaviour; strengthening; near surface mounted; spiral; steel wire rope;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The strength of reinforced concrete members can be enhanced using externally bonded reinforcement (EBR) and near surface mounted (NSM) methods. However, small number of studies has adopted the NSM method for torsional strengthening. To date, no study has examined the use of spiral NSM steel wire rope and epoxy adhesives for torsional strengthening. Therefore, this study examines the behaviour of RC beams subjected to the combined actions of torsion and bending moment when they are strengthened with spiral NSM steel wire rope (Ø8 mm) in different configurations. For this purpose, six beams of 15 cm × 25 cm × 200 cm were casted. One of these beams was conventional, whereas all the other beams were strengthened with spiral NSM steel wire rope. During the testing process, the twist angle at the torque intervals, first cracking torque, ultimate torque and ultimate twist angle of the conventional beam were compared with those of the strengthened beams. The torsional performance of the RC beams was significantly improved using spiral NSM steel wire rope in various spiral NSM configurations.
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