Experimental Evaluation of CFRP-Concrete Bond Behavior under High Loading Rates Using Particle Image Velocimetry Method
Publication: Journal of Composites for Construction
Volume 23, Issue 3
Abstract
Numerous studies have been conducted to evaluate bond behavior between fiber-reinforced polymer (FRP) composites and concrete substrate in externally bonded reinforcement (EBR) systems subject to static loads. However, few investigations examined the bond behavior under dynamic loads, and in particular under high loading rates. This study investigates FRP-concrete bond behavior under quasi-static and high loading rates. For this purpose, 12 concrete prisms were strengthened with carbon FRP (CFRP) sheets and subjected to the single-shear test under different loading rates. The particle image velocimetry (PIV) method is used as an image processing technique to obtain the deformation and strain fields. Results indicate that bond capacity rises with increasing loading rate, which is more considerable in the case of low-strength concrete specimens. The increased bond capacity is attributed to the different mechanisms of bond fracturing under quasi-static and high loading rates. This motivates a thorough evaluation of the effects of the relevant mechanisms on bond behavior. Bond analysis by means of the PIV method reveals not only an increasing interfacial shear stress distribution between the CFRP composite and the concrete substrate, but also concentration of strain on the CFRP sheet. Finally, bond-slip graphs are used to show that the high loading rates applied increase the specific fracture energy.
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References
ACI (American Concrete Institute). 2017. Guide for the design and construction of externally bonded FRP systems for strengthening concrete structures.. Farmington Hills, MI: ACI.
Al-Mahaidi, R., and R. Kalfat. 2011. “Investigation into CFRP laminate anchorage systems utilising bi-directional fabric wrap.” Compos. Struct. 93 (4): 1265–1274. https://doi.org/10.1016/j.compstruct.2010.10.012.
Aram, M. R., C. Czaderski, and M. Motavalli. 2008. “Debonding failure modes of flexural FRP-strengthened RC beams.” Composites Part B 39 (5): 826–841. https://doi.org/10.1016/j.compositesb.2007.10.006.
ASTM. 2000. Standard test method for tensile properties of polymer matrix composite materials. ASTM D3039/D3039M. West Conshohocken, PA: ASTM.
ASTM. 2002. Standard practice for making and curing concrete test specimens in the laboratory. ASTM C192/C192M. West Conshohocken, PA: ASTM.
Brosens, K. 2001. “Anchorage of externally bonded steel plates and CFRP laminates for the strengthening of concrete elements.” Ph.D. thesis, Dept. of Civil Engineering, Katholieke Univ. Leuven.
Buchan, P. A., and J. F. Chen. 2007. “Blast resistance of FRP composites and polymer strengthened concrete and masonry structures: A state-of-the-art review.” Composites Part B 38 (5–6): 509–522. https://doi.org/10.1016/j.compositesb.2006.07.009.
Carloni, C., S. Verre, L. H. Sneed, and L. Ombres. 2017. “Loading rate effect on the debonding phenomenon in fiber reinforced cementitious matrix-concrete joints.” Composites Part B 108: 301–314. https://doi.org/10.1016/j.compositesb.2016.09.087.
Carroll, J. D., W. Abuzaid, J. Lambros, and H. Sehitoglu. 2013. “High resolution digital image correlation measurements of strain accumulation in fatigue crack growth.” Int. J. Fatigue 57: 140–150. https://doi.org/10.1016/j.ijfatigue.2012.06.010.
Chen, J. F., and J. G. Teng. 2001. “Anchorage strength models for FRP and steel plates bonded to concrete.” J. Struct. Eng. 127 (7): 784–791. https://doi.org/10.1061/(ASCE)0733-9445(2001)127:7(784).
Cotsovos, D. M., and M. N. Pavlović. 2008. “Numerical investigation of concrete subjected to compressive impact loading. Part 1: A fundamental explanation for the apparent strength gain at high loading rates.” Comput. Struct. 86 (1–2): 145–163. https://doi.org/10.1016/j.compstruc.2007.05.014.
Dai, J., T. Ueda, and Y. Sato. 2006. “Unified analytical approaches for determining shear bond characteristics of FRP-concrete interfaces through pullout tests.” J. Adv. Concr. Technol. 4 (1): 133–145. https://doi.org/10.3151/jact.4.133.
D’Antino, T., and C. Pellegrino. 2014. “Bond between FRP composites and concrete: Assessment of design procedures and analytical models.” Composites Part B 60: 440–456. https://doi.org/10.1016/j.compositesb.2013.12.075.
Diab, H. M., and O. A. Farghal. 2014. “Bond strength and effective bond length of FRP sheets/plates bonded to concrete considering the type of adhesive layer.” Composites Part B 58: 618–624. https://doi.org/10.1016/j.compositesb.2013.10.075.
Franco, A., and G. Royer-Carfagni. 2014. “Effective bond length of FRP stiffeners.” Int. J. Non Linear Mech. 60: 46–57. https://doi.org/10.1016/j.ijnonlinmec.2013.12.003.
Fu, B. H. C., M. A. Erki, and M. Seckin. 1992. “Review of effects of loading rate on concrete in compression.” J. Struct. Eng. 117 (12): 3645–3659. https://doi.org/10.1061/(ASCE)0733-9445(1991)117:12(3645).
Hao, H., and E. K. C. Tang. 2010. “Numerical simulation of a cable-stayed bridge response to blast loads, Part II: Damage prediction and FRP strengthening.” Eng. Struct. 32 (10): 3193–3205. https://doi.org/10.1016/j.engstruct.2010.06.006.
Hollaway, L. C., and M. B. Leeming. 2001. Using externally-bonded FRP composites in structural and civil engineering. Boston: CRC Press.
Hosseini, A., and D. Mostofinejad. 2013a. “Effect of groove characteristics on CFRP-to-concrete bond behavior of EBROG joints: Experimental study using particle image velocimetry (PIV).” Constr. Build. Mater. 49: 364–373. https://doi.org/10.1016/j.conbuildmat.2013.08.036.
Hosseini, A., and D. Mostofinejad. 2013b. “Experimental investigation into bond behavior of CFRP sheets attached to concrete using EBR and EBROG techniques.” Compos. Part B 51: 130–139. https://doi.org/10.1016/j.compositesb.2013.03.003.
Hosseini, A., and D. Mostofinejad. 2014. “Effective bond length of FRP-to-concrete adhesively-bonded joints: Experimental evaluation of existing models.” Int. J. Adhes. Adhes. 48: 150–158. https://doi.org/10.1016/j.ijadhadh.2013.09.022.
Hosseini, A., D. Mostofinejad, and M. Emami. 2015. “Influence of bonding technique on bond behavior of CFRP-to-clay brick masonry joints: Experimental study using particle image velocimetry (PIV).” Int. J. Adhes. Adhes. 59: 27–39. https://doi.org/10.1016/j.ijadhadh.2015.01.015.
Hosseini, A., D. Mostofinejad, and M. Hajialilue-Bonab. 2014. “Displacement and strain field measurement in steel and RC beams using particle image velocimetry.” J. Eng. Mech. 140 (11): 04014086. https://doi.org/10.1061/(ASCE)EM.1943-7889.0000805.
Huo, J., J. Liu, X. Dai, J. Yang, Y. Lu, Y. Xiao, and G. Monti. 2016. “Experimental study on dynamic behavior of CFRP-to-concrete interface.” J. Compos. Constr. 20 (5): 4016026. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000677.
Kang, T. H. K., J. Howell, S. Kim, and D. J. Lee. 2012. “A state-of-the-art review on debonding failures of FRP laminates externally adhered to concrete.” Int. J. Concr. Struct. Mater. 6 (2): 123–134. https://doi.org/10.1007/s40069-012-0012-1.
Ko, H., S. Matthys, A. Palmieri, and Y. Sato. 2014. “Development of a simplified bond stress-slip model for bonded FRP-concrete interfaces.” Constr. Build. Mater. 68 (2): 142–157. https://doi.org/10.1016/j.conbuildmat.2014.06.037.
Lesko, J. J., A. Machida, S. H. Rizkalla, F. Asce, T. C. Triantafillou, and M. Asce. 2002. “Fiber-reinforced polymer composites for construction: State-of-the-art review.” J. Compos. Constr. 6 (2): 73–87. https://doi.org/10.1061/(ASCE)1090-0268(2002)6:2(73).
Leung, C. K. Y., and W. K. Tung. 2006. “Three-parameter model for debonding of FRP plate from concrete substrate.” J. Mech. Eng. 132 (5): 509–518. https://doi.org/10.1061/(ASCE)0733-9399(2006)132:5(509).
Lu, X. Z., J. G. Teng, L. P. Ye, and J. J. Jiang. 2005. “Bond-slip models for FRP sheets/plates bonded to concrete.” Eng. Struct. 27 (6): 920–937. https://doi.org/10.1016/j.engstruct.2005.01.014.
Mazzotti, C., M. Savoia, and B. Ferracuti. 2008. “An experimental study on delamination of FRP plates bonded to concrete.” Constr. Build. Mater. 22 (7): 1409–1421. https://doi.org/10.1016/j.conbuildmat.2007.04.009.
Meier, U. 2000. “Composite materials in bridge repair.” In Vol. 1225 of Proc., CEUR Workshop, 41–42. Dordrecht, Netherlands: Kluwer Academic Publishers.
National Research Council. 2014. Guide for the design and construction of externally bonded FRP systems for strengthening existing structures.. National Research Council.
Neubauer, U., and F. S. Rostasy. 1997. “Design aspects of concrete structures strengthened with externally bonded CFRP-plates.” In Vol. 2 of Proc., 7th Int. Conf. on Structural Faults and Repair, 109–118. Edinburgh, UK: Engineering Technics Press.
Oehlers, D. J., and J. P. Moran. 1990. “Premature failure of externally plated reinforced concrete beams.” J. Struct. Eng. 116 (4): 978–995. https://doi.org/10.1061/(ASCE)0733-9445(1990)116:4(978).
Pajak, M. 2011. “The influence of the strain rate on the strength of concrete taking into account the experimental techniques.” Nanomech. Sci. Technol.: Int. J. 2 (3): 231–253.
Pan, J., and C. K. Leung. 2007. “Effect of concrete composition on FRP/concrete bond capacity.” J. Compos. Constr. 11 (6): 611–618. https://doi.org/10.1061/(ASCE)1090-0268(2007)11:6(611).
Pham, H. B., and R. Al-Mahaidi. 2006. “Prediction models for debonding failure loads of carbon fiber reinforced polymer retrofitted reinforced concrete beams.” J. Compos. Constr. 10 (1): 48–59. https://doi.org/10.1061/(ASCE)1090-0268(2006)10:1(48).
Rabinovitch, O. 2012. “Dynamic debonding in concrete beams strengthened with composite materials.” Int. J. Solids Struct. 49 (26): 3641–3658. https://doi.org/10.1016/j.ijsolstr.2012.07.025.
Rabinovitch, O. 2014. “Dynamic edge debonding in FRP strengthened beams.” Eur. J. Mech. A. Solids 47 (26): 309–326. https://doi.org/10.1016/j.euromechsol.2014.04.008.
Rabinovitch, O., and H. Madah. 2012. “Dynamics of FRP strengthened unidirectional masonry walls. I: A multilayered finite element.” J. Mech. Mater. Struct. 7 (1): 1–28. https://doi.org/10.2140/jomms.2012.7.1.
Sebastian, W. M. 2001. “Significance of midspan debonding failure in FRP-plated concrete beams.” J. Struct. Eng. 127 (7): 792–798. https://doi.org/10.1061/(ASCE)0733-9445(2001)127:7(792).
Seracino, R., M. R. Raizal Saifulnaz, and D. J. Oehlers. 2007. “Generic debonding resistance of EB and NSM plate-to-concrete joints.” J. Compos. Constr. 11 (1): 62–70. https://doi.org/10.1061/(ASCE)1090-0268(2007)11:1(62).
Sharma, S. K., M. S. M. Ali, D. Goldar, and P. K. Sikdar. 2006. “Plate-concrete interfacial bond strength of FRP and metallic plated concrete specimens.” Composites Part B 37 (1): 54–63. https://doi.org/10.1016/j.compositesb.2005.05.011.
Shen, D., X. Shi, Y. Ji, and F. Yin. 2015a. “Strain rate effect on bond stress: Slip relationship between basalt fiber-reinforced polymer sheet and concrete.” Reinf. Plast. Compos. 34 (7): 547–563. https://doi.org/10.1177/0731684415574539.
Shen, D., H. Shi, Y. Ji, and F. Yin. 2015b. “Strain rate effect on effective bond length of basalt FRP sheet bonded to concrete.” Constr. Build. Mater. 82 (7): 206–218. https://doi.org/10.1016/j.conbuildmat.2015.02.016.
Shi, J., H. Zhu, Z. Wu, and H. Diab. 2012. “Strain rate effect on the bond of FRP laminate-concrete interface.” China Civ. Eng. 1–8.
Smith, S. T., and J. G. Teng. 2002. “FRP-strengthened RC beams. Part I: Review of debonding strength models.” Eng. Struct. 24 (4): 397–417. https://doi.org/10.1016/S0141-0296(01)00106-7.
Standards Australia. 2008. Design handbook for RC structures retrofitted with FRP and metal plates: Beams and slabs. HB305-2008. Sydney, NSW, Australia: Standards Australia.
Stanier, S. A., J. Blaber, W. A. Take, and D. J. White. 2016. “Improved image-based deformation measurement for geotechnical applications.” Can. Geotech. J. 53 (5): 727–739. https://doi.org/10.1139/cgj-2015-0253.
Subramaniam, K. V., C. Carloni, and L. Nobile. 2007. “Width effect in the interface fracture during shear debonding of FRP sheets from concrete.” Eng. Fract. Mech. 74 (4): 578–594. https://doi.org/10.1016/j.engfracmech.2006.09.002.
Täljsten, B. 1994. “Plate bonding: Strengthening of existing concrete structures with epoxy bonded plates of steel or fibre reinforced plastics.” Ph.D. thesis, Dept. of Civil Engineering, Lulea Univ. of Technology.
Teng, J. G., S. T. Smith, J. Yao, and J. F. Chen. 2003. “Intermediate crack-induced debonding in RC beams and slabs.” Constr. Build. Mater. 17 (6–7): 447–462. https://doi.org/10.1016/S0950-0618(03)00043-6.
Teng, J. G., H. Yuan, and J. F. Chen. 2006. “FRP-to-concrete interfaces between two adjacent cracks: Theoretical model for debonding failure.” Int. J. Solids Struct. 43 (18–19): 5750–5778. https://doi.org/10.1016/j.ijsolstr.2005.07.023.
White, D. J., W. A. Take, and M. D. Bolton. 2001. “Measuring soil deformation in geotechnical models using digital images and PIV analysis.” In Proc., 10th Int. Conf. on Computer Methods and Advances in Geomechanics, 997–1002. Rotterdam, Netherlands: A.A. Balkema.
Wu, Y. F., X. S. Xu, J. Bin Sun, and C. Jiang. 2012. “Analytical solution for the bond strength of externally bonded reinforcement.” Compos. Struct. 94 (11): 3232–3239. https://doi.org/10.1016/j.compstruct.2012.04.026.
Yan, D., and G. Lin. 2006. “Dynamic properties of concrete in direct tension.” Cem. Concr. Res. 36 (7): 1371–1378. https://doi.org/10.1016/j.cemconres.2006.03.003.
Yan, D., and G. Lin. 2008. “Influence of initial static stress on the dynamic properties of concrete.” Cem. Concr. Compos. 30 (4): 327–333. https://doi.org/10.1016/j.cemconcomp.2007.11.004.
Yao, J., and J. G. Teng. 2007. “Plate end debonding in FRP-plated RC beams—I: Experiments.” Eng. Struct. 29 (10): 2457–2471. https://doi.org/10.1016/j.engstruct.2006.11.022.
Yuani, H., Z. Wu, and H. Yoshizawa. 2001. “Theoretical stress solutions on interfacial bonded transfer of externally laminates steel/composite.” Struct. Eng. JSCE 18 (1): 27–39. https://doi.org/10.2208/jscej.2001.675_27.
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Published In
Journal of Composites for Construction
Volume 23 • Issue 3 • June 2019
Copyright
©2019 American Society of Civil Engineers.
History
Received: Oct 10, 2017
Accepted: Sep 21, 2018
Published online: Feb 19, 2019
Published in print: Jun 1, 2019
Discussion open until: Jul 19, 2019
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