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http://dx.doi.org/10.12989/cac.2019.24.1.037

Shear behaviour of RC beams retrofitted using UHPFRC panels epoxied to the sides  

Al-Osta, Mohammed A. (Department of Civil & Environmental Engineering, King Fahd University of Petroleum & Minerals (KFUPM))
Publication Information
Computers and Concrete / v.24, no.1, 2019 , pp. 37-49 More about this Journal
Abstract
In this study, the shear behaviour of reinforced concrete (RC) beams that were retrofitted using precast panels of ultra-high performance fiber reinforced concrete (UHPFRC) is presented. The precast UHPFRC panels were glued to the side surfaces of RC beams using epoxy adhesive in two different configurations: (i) retrofitting two sides, and (ii) retrofitting three sides. Experimental tests on the adhesive bond were conducted to estimate the bond capacity between the UHPFRC and normal concrete. All the specimens were tested in shear under varying levels of shear span-to-depth ratio (a/d=1.0; 1.5). For both types of configuration, the retrofitted specimens exhibited a significant improvement in terms of stiffness, load carrying capacity and failure mode. In addition, the UHPFRC retrofitting panels glued in three-sides shifted the failure from brittle shear to a more ductile flexural failure with enhancing the shear capacity up to 70%. This was more noticeable in beams that were tested with a/d=1.5. An approach for the approximation of the failure capacity of the retrofitted RC beams was evolved using a multi-level regression of the data obtained from the experimental work. The predicted values of strength have been validated by comparing them with the available test data. In addition, a 3-D finite element model (FEM) was developed to estimate the failure load and overall behaviour of the retrofitted beams. The FEM of the retrofitted beams was conducted using the non-linear finite element software ABAQUS.
Keywords
ultra-high performance fiber reinforced concrete; shear behaviour; retrofitting; epoxy agglutinant; bond capacity; failure mode; finite element model;
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Times Cited By KSCI : 4  (Citation Analysis)
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1 ACI committee 318 (2014), Building Code Requirements for Structural Concrete and Commentary, ACI 318-14.
2 ACI-Committee 546 (2014), 546.3R-14: Guide to Materials Selection for Concrete Repair, Farmington Hills, American Concrete Institute.
3 Ombres, L. (2015), "Structural performances of reinforced concrete beams strengthened in shear with a cement based fiber composite material", Compos. Struct., 122, 316-329. https://doi.org/10.1016/j.compstruct.2014.11.059.   DOI
4 Rahman, S., Molyneaux, T. and Patnaikuni, I. (2005), "Ultra high performance concrete, recent applications and research", Aust. J. Civil Eng., 2(1), 13-20. https://doi.org/10.1080/14488353.2005.11463913.   DOI
5 Rama, J.S., Chauhan, D.R., Sivakumar, M.V.N., Vasan, A. and Murthy, A.R. (2017), "Fracture properties of concrete using damaged plasticity model-A parametric study", Struct. Eng. Mech., 64(1), 59-69. https://doi.org/10.12989/sem.2017.64.1.059.   DOI
6 Roth, M.J., Slawson, T.R. and Flores, O.G. (2010), "Flexural and tensile properties of a glass fiber-reinforced ultra-high-strength concrete, an experimental, micromechanical and numerical study", Comput. Concrete, 7(2), 169-190. https://doi.org/10.12989/cac.2010.7.2.169.   DOI
7 Ruano, G., Isla F., Pedraza, R.I., Sfer, D. and Luccioni, B. (2014), "Shear retrofitting of reinforced concrete beams with steel fiber reinforced concrete", Constr. Build. Mater., 54, 646-658. https://doi.org/10.1016/j.conbuildmat.2013.12.092.   DOI
8 Ruano, G., Isla, F., Sfer, D. and Luccioni, B. (2015), "Numerical modeling of reinforced concrete beams repaired and strengthened with SFRC", Eng. Struct., 86, 168-181. https://doi.org/10.1016/j.engstruct.2014.12.030.   DOI
9 Sakr, M.A., Sleemah, A.A., Khalifa, T.M. and Mansour, W.N. (2019), "Shear strengthening of reinforced concrete beams using prefabricated ultra-high performance fiber reinforced concrete plates, Experimental and numerical investigation", Struct. Concrete, 1-17. https://doi.org/10.1002/suco.201800137.
10 Sika Construction Chemicals (2014), "$Sikadur^{(R)}$ -32 LP", Product data sheet.
11 Simulia, D. (2013), ABAQUS 6.13 User's Manual, Dassault Systems, Providence, RI.
12 Sprinkel, M.M. and Ozyildirim, C. (2000), "Evaluation of high performance concrete overlays placed on Route 60 over Lynnhaven Inlet in Virginia", No. VTRC-01-R1, Virginia Transportation Research Council.
13 Tai, Y.S., Pan, H.H. and Kung, Y.N. (2011), "Mechanical properties of steel fiber reinforced reactive powder concrete following exposure to high temperature reaching 800 C", Nucl. Eng. Des., 241(7), 2416-2424. https://doi.org/10.1016/j.nucengdes.2011.04.008.   DOI
14 Thirumalaiselvi, A., Anandavalli, N., Rajasankar, J. and Iyer, N.R. (2016), "Numerical evaluation of deformation capacity of laced steel-concrete composite beams under monotonic loading", Steel Compos. Struct., 20(1), 167-184. http://dx.doi.org/10.12989/scs.2016.20.1.167.   DOI
15 Chen, J. and Tao, Y. (2011), "Finite element modelling of FRP-toconcrete bond behaviour using the concrete damage plasticity theory combined with a plastic degradation model", Advances in FRP Composites in Civil Engineering, Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-17487-2_7.   DOI
16 Chynoweth, G., Stankie, R.R., Allen, W.L., Anderson, R.R., Babcock, W.N., Barlow, P., Bartholomew, J.J., Bergemann, G.O., Bullock R.E. and Constantino, F.J. (1996), "Concrete repair guide", ACI Committee, Concrete Repair Manual, 546, 287-327.
17 Hussein, L. and Amleh, L. (2015), "Structural behavior of ultrahigh performance fiber reinforced concrete-normal strength concrete or high strength concrete composite members", Constr. Build. Mater., 93, 1105-1116. https://doi.org/10.1016/j.conbuildmat.2015.05.030.   DOI
18 Graybeal, B. (2011), "FHWA TECHNOTE, ultra high performance concrete", FHWA Publication No, FHWA-HRT-11-038, Federal Highway Administration.
19 Graybeal, B.A. (2006), "Material property characterization of ultra-high performance concrete", No. FHWA-HRT-06-103. United States, Federal Highway Administration, Office of Infrastructure Research and Development.
20 Hakeem, I.Y.A. (2011), "Characterization of an ultra-high performance concrete", MS Thesis, King Fahd University of Petroleum and Minerals, Saudi Arabia.
21 Khan, U., Al-Osta, M.A. and Ibrahim, A. (2017), "Modeling shear behavior of reinforced concrete beams strengthened with externally bonded CFRP sheets", Struct. Eng. Mech., 61(1), 125-142. https://doi.org/10.12989/sem.2017.61.1.125.   DOI
22 Lee, J. and Fenves, G.L. (1998), "Plastic-damage model for cyclic loading of concrete structures", J. Eng. Mech., 124(8), 892-900. https://doi.org/10.1061/(ASCE)0733-9399(1998)124:8(892).   DOI
23 Lubbers, A.R. (2003), "Bond performance between ultra-high performance concrete and prestressing strands", PhD Dissertation, Ohio University.
24 Lubliner, J., Oliver, J., Oller, S. and Onate, E. (1989), "A plasticdamage model for concrete", Int. J. Solid. Struct., 25(3), 299-326. https://doi.org/10.1016/0020-7683(89)90050-4.   DOI
25 McCormac, J.C. and Brown, R.H. (2015), Design of Reinforced Concrete, John Wiley & Sons.
26 Ahmad, S., Hakeem, I. and Maslehuddin, M. (2016), "Development of an optimum mixture of ultra-high performance concrete", Eur. J. Environ. Civil Eng., 20(9), 1106-1126. https://doi.org/10.1080/19648189.2015.1090925.   DOI
27 Mercan, B. (2011), "Modeling and behavior of prestressed concrete spandrel beams", PhD Dissertation, University of Minnesota.
28 Mohammed, T.J., Bakar, B.A. and Bunnori, N.M. (2016), "Torsional improvement of reinforced concrete beams using ultra high-performance fiber reinforced concrete (UHPFC) jackets-Experimental study", Constr. Build. Mater., 106, 533-542. https://doi.org/10.1016/j.conbuildmat.2015.12.160.   DOI
29 Noshiravani, T. and Bruhwiler, E. (2013), "Experimental investigation on reinforced ultra-high-performance fiberreinforced concrete composite beams subjected to combined bending and shear", ACI Struct. J., 110(2), 251.
30 Ahlborn, T., Harris, D., Misson, D. and Peuse, E. (2011), "Strength and durability characterization of ultra-high performance concrete under variable curing conditions", Tran. Res. Board Ann. Meet., 22(51), 68-75.
31 Al-Osta, M., Isa, M., Baluch, M. and Rahman, M. (2017), "Flexural behavior of reinforced concrete beams strengthened with ultra-high performance fiber reinforced concrete", Constr. Build. Mater., 134, 279-296. https://doi.org/10.1016/j.conbuildmat.2016.12.094.   DOI
32 Al-Osta, M.A., Al-Sakkaf, H.A., Sharif, A.M., Ahmad, S. and Baluch, M.H. (2018), "Finite element modeling of corroded RC beams using cohesive surface bonding approach", Comput. Concrete, 22(2), 167-182. https://doi.org/10.12989/cac.2018.22.2.167.   DOI
33 ASTM International (2004), ASTM C496/C496M Standard Test Method for Splitting Tensile Strength of Cylindrical Concrete, ASTM International, West Conshohocken, PA.
34 Al-Osta, M.A. (2018) , "Exploitation of ultra-high performance fibre reinforced concrete for the strengthening of concrete structural members", Adv. Civil Eng., 2018, Article ID 8678124, 1-12. https://doi.org/10.1155/2018/8678124.   DOI
35 ASTM International (2017), ASTM C39 Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens, ASTM International, West Conshohocken, PA.
36 ASTM International (2016), ASTM C78/C78M-15b Standard Test Method for Flexural Strength of Concrete (Using Simple Beam with Third-Point Loading), ASTM International, West Conshohocken, PA.
37 Chalioris, C.E., Thermou, G.E. and Pantazopoulou, S.J. (2014), "Behaviour of rehabilitated RC beams with self-compacting concrete jacketing-Analytical model and test results", Constr. Build. Mater., 55, 257-273. https://doi.org/10.1016/j.conbuildmat.2014.01.031.   DOI
38 Bahraq, A.A., Al-Osta, M.A., Ahmad, S., Al-Zahrani, M.M., Al-Dulaijan, S.O. and Rahman, M.K. (2019), "Experimental and numerical investigation of shear behavior of RC beams strengthened by ultra-high performance concrete", Int. J. Concrete Struct. Mater., 13(1), 1-19. https://doi.org/10.1186/s40069-018-0330-z.   DOI
39 Birtel, V. and Mark, P. (2006), "Parameterised finite element modelling of RC beam shear failure", ABAQUS Users' Conference.
40 Bossio, A., Monetta, T., Bellucci, F., Lignola, G.P. and Prota, A. (2015), "Modeling of concrete cracking due to corrosion process of reinforcement bars", Cement Concrete Res., 71, 78-92. https://doi.org/10.1016/j.cemconres.2015.01.010.   DOI
41 ASTM International. (2013). ASTM C882-99 Standard Test Method for Bond Strength of Epoxy-Resin Systems used with Concrete, ASTM International, West Conshohocken, PA:.