کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
260070 | 503650 | 2011 | 11 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Experimental and analytical investigation of CFRP flexural and shear strengthening efficiencies of RC beams Experimental and analytical investigation of CFRP flexural and shear strengthening efficiencies of RC beams](/preview/png/260070.png)
This paper studies the CFRP flexure and shear strengthening efficiencies of concrete beams. Half-scale beams, with different flexure and shear internal steel ratios, were tested in three-point bending. Flexure or shear-critical beams were provided with CFRP longitudinal sheets or U-wraps, respectively. Flexure–shear-critical beams were provided with shear or combined systems. At high flexural damage, 38.3% reduction in shear strengthening efficiency was noted at higher ductility, while the flexural strengthening efficiency reduced by 65.7% at high shear damage, both from capacity perspectives. The U-wraps were 22% activated, while full sheet activation occurred and reduced by dowel rupture by 30.8% at high shear damage. While single failures were accurately predicted by ACI 318M-05 and ACI 440.2R-08, combined ones were not.
Journal: Construction and Building Materials - Volume 25, Issue 3, March 2011, Pages 1419–1429