Scholarlink

This paper presents experimental findings on the flexural behavior of reinforced concrete (RC) one-way slabs with cut-out openings, strengthened using near-surface mounted fiber-reinforced polymer (NSM-FRP) bars. The study investigated key variables, including the NSM bar material (glass FRP and basalt FRP) and the number of cut-out openings (one and two). Results demonstrated significant improvements in ultimate capacity for NSM-strengthened slabs, with increases up to 101% over unstrengthened counterparts with openings. These gains were influenced by the NSM-FRP strengthening technique, with NSM-strengthened slabs exhibiting a greater ductility than a control slab without openings. Additionally, basalt FRP-NSM bars performed comparably to glass FRP-NSM bars, and the presence of additional openings had only a minor effect on the ultimate capacity of the slabs.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Flexural Behavior of Reinforced Concrete Slabs with Cut-Out Openings Strengthened with NSM-FRP Bars

  • 会议论文

  • 发表日期：

    2026年

查看全文
  • Omar Aljidda,
  • Wael Alnahhal,
  • Ahmed El Refai

摘要

This paper presents experimental findings on the flexural behavior of reinforced concrete (RC) one-way slabs with cut-out openings, strengthened using near-surface mounted fiber-reinforced polymer (NSM-FRP) bars. The study investigated key variables, including the NSM bar material (glass FRP and basalt FRP) and the number of cut-out openings (one and two). Results demonstrated significant improvements in ultimate capacity for NSM-strengthened slabs, with increases up to 101% over unstrengthened counterparts with openings. These gains were influenced by the NSM-FRP strengthening technique, with NSM-strengthened slabs exhibiting a greater ductility than a control slab without openings. Additionally, basalt FRP-NSM bars performed comparably to glass FRP-NSM bars, and the presence of additional openings had only a minor effect on the ultimate capacity of the slabs.