کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9777805 | 1509700 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Seismic shear strengthening of R/C columns with ferrocement jacket
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
This paper presents results of an experimental study to evaluate a retrofit technique for strengthening shear deficient short concrete columns. In this technique a ferrocement jacket reinforced with expanded steel meshes is used for retrofitting. Six short concrete columns, including four strengthened specimens, were tested. Specimens were under a constant compressive axial force of 15% of column axial load capacity based on original concrete gross, Ag, and the concrete compressive strength, fcâ². Main variables were the spacing of ties in original specimens and the volume fraction of expanded metal in jackets. Original specimens failed before reaching their nominal calculated flexural strength, Mn, and had very poor ductility. Strengthened specimens reached nominal flexural strength and had a ductility capacity factor of up to 5.5. Based on the test results, it can be concluded that ferrocement jackets reinforced with expanded steel meshes can be used effectively to strengthen shear deficient concrete columns.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Composites - Volume 27, Issues 7â8, AugustâSeptember 2005, Pages 834-842
Journal: Cement and Concrete Composites - Volume 27, Issues 7â8, AugustâSeptember 2005, Pages 834-842
نویسندگان
Mohammad Taghi Kazemi, Reza Morshed,