Shear Strengthening of RC Beams by Prefabricated UHPFRC Panels

Document Type : Original Article

Authors

1 Ph.D. Student of Civil Engineering, Sahand University of Technology, Tabriz, Iran

2 Associate Professor, Civil Engineering Department, Sahand University of Technology, Tabriz, Iran

Abstract

In this study, applicability of ultra-high performance fiber-reinforced concrete panels in shear strengthening of RC beams was investigated experimentally and numerically. In total, eight RC beams (dimensions 10×20×150 cm) with two different bending capacity and lack of shear strength were produced. Of these, four were control beams and four were strengthened with prefabricated UHPFRC panels (dimensions 3×15×126 cm) and were tested in 3-points bending. The results show that this method can be well used for strengthening of RC beams. In this regard, a 3D model using ABAQUS FEM software was used to investigate the strengthening method. For this purpose, numerical models were developed to define flexural behavior of UHPFRC and coupling between NC and UHPFRC. FEM analysis approved the efficiency of the method also.

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References

1. آغنی، کیان،"بررسی آزمایشگاهی و عددی مقاوم سازی برشی تیرهای بتن مسلح با صفحات پیش ساخته RPC"، پایان نامه کارشناسی ارشد، دانشگاه صنعتی سهند، دی ماه 1394
2. Tayeh B, Abu Bakar B, Megat Johari M and Voo Y, “Mechanical and permeability properties of the interface between normal concrete substrate and ultra-high performance fiber concrete overlay.” Journal of Construction and Building Materials, 2012, 36: 538–548.
3. Iskhakov I, Ribakov Y, Holschemacher K and Mueller T, “High performance repairing of reinforced concrete structures.” Journal of Materials and Design, 2013, 44: 216–222.
4. Martinola G, Meda A, Plizzari GA, Rinaldi Z, “Strengthening and Repair of RC beams with Fiber Reinforced Concrete” , Cement and Concrete Composites, 2010
5. Jian Wang, Hidenori Morikawa, Tetsuo Kawaguchi, “Shear strengthening of RC beams using Ultra-High-Strength-Fiber-Reinforced Concrete”, Magazine of Concrete Research, ICE publishing , 2015
6. Sikadur 330® , “ Construction Manual – Sikadur 330 2-part Epoxy Impregnation Resin”, Sika Gulf B.S.C ©
7. SIMULIA ABAQUS, “ABAQUS Analysis 6.12 Userʹs Manual”, ABAQUS Inc.
8. Hsu, L.S., & Hsu, “Complete stress-strain behavior of high-strength concrete under compression.” Magazine of Concrete Research, 1994, 46(169), 301-312.
9. Graybeal B, “Compressive behavior of Ultra-High-Performance-Fiber-Reinforced Concrete” , ACI Materials Journal, Technical paper, April 2007, Title no. 107-M17
10. K. Wille, S.EL-Tawil, A.E. Naaman, “Properties of Strain Hardening Ultra High Performance Fiber reinforced Concrete under Direct Tensile Loading”, Journal of Cement & Concrete Composite, 2014, 68, 53-66
11. JSCE, “ Recommendation for Design and Construction of High Performance Fiber Reinforced Cement Composites with multiple fine cracks”, Concrete Engineering Series 82, March 2008
12. Yasmeen taleb O, Susanne H, Ola D, “The effect of CFRP and CFRP/concrete interface models when modelling retrofitted RC beams with FEM.” Journal of Composite structures, 2010, 92, 1391-1398

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History

  • Receive Date: 21 June 2017
  • Accept Date: 21 June 2017

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