کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
818877 906538 2013 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Contribution of U-shaped strips to the flexural capacity of low-strength reinforced concrete beams strengthened with carbon fibre composite sheets
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Contribution of U-shaped strips to the flexural capacity of low-strength reinforced concrete beams strengthened with carbon fibre composite sheets
چکیده انگلیسی

This paper presents the results of an experimental study on the flexural behaviour of low-strength reinforced concrete beams strengthened with externally bonded carbon fibre sheets and on the bond behaviour between these sheets and concrete. The applied sheets without additional anchorage always debonded from the surface of the tested specimens. With the help of U-shaped strips applied at the ends of longitudinal sheets, the load bearing capacity and deforming ability of the strengthened beams could be significantly improved. Based on the fracture mechanics model, the effective shear force between these sheets and concrete was determined. According to the brace-arch model and a further parametric study, it was found that the bearing load of a strengthened beam without additional anchorage increased with the concrete strength and that the calculated capacity of a strengthened beam increased with the sectional area of sheets in a more effective rate when U-shaped strips were applied.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Part B: Engineering - Volume 45, Issue 1, February 2013, Pages 117–126
نویسندگان
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