کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6718924 | 503542 | 2016 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Flexural behaviour of reinforced concrete beams strengthened with a composite reinforcement layer: BFRP grid and ECC
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this paper, a new strengthening technique for reinforced concrete (RC) beams is proposed by combining Basalt fiber Reinforced Polymer (BFRP) grid and Engineered Cementitious Composites (ECC) as a composite reinforcement layer (CRL). Five RC beams externally bonded with the CRL at the soffit and one control RC beam were tested to investigate their flexural behaviour. The thickness of BFRP grids (i.e. 1Â mm, 3Â mm and 5Â mm) and the bonded length of CRL (i.e. 400Â mm, 450Â mm and 500Â mm) were selected as two main parameters in the test program, while the width and thickness of CRL were fixed approximately at 200Â mm and 30Â mm, respectively. The test results showed that there is no clear CRL debonding in the strengthened beams. The two final failure modes were concrete crushing or rupture of the BFRP grids, indicating that the proposed technique is effective in suppressing the debonding of externally bonded materials and fully utilizing the material strengths. An analytical model is also presented to predict the load-deflection responses of the strengthened beams, which was validated through comparisons with the test results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 115, 15 July 2016, Pages 424-437
Journal: Construction and Building Materials - Volume 115, 15 July 2016, Pages 424-437
نویسندگان
Yu-Zhou Zheng, Wen-Wei Wang, John C. Brigham,