Bond Properties of Sand-Coated GFRP Bars with Fly Ash–Based Geopolymer Concrete
Publication: Journal of Composites for Construction
Volume 20, Issue 5
Abstract
Bond behavior is an important subject in the design and performance of reinforced concrete structures. In this research, the bond property between sand-coated glass fiber–reinforced polymer (GFRP) bars, a corrosion-resistant substitute to steel bars, and fly ash–based geopolymer cement (GPC) concrete, a more environmental friendly alternative to ordinary portland cement (OPC) concrete, is investigated. Pullout test specimens containing GFRP bars embedded in GPC and OPC concrete cylinders with 100-mm diameter and 170-mm height were prepared. Three different embedment lengths were tested: three, six, and nine times the bar diameter. Average concrete compressive strengths of approximately 25 and 45 MPa and GFRP bar diameters of 12.7 and 15.9 mm were the other test parameters. For each specimen, the test results include the bond failure mode, the average bond strength, the slip at the loaded and free end, and the bond-slip relationship curves. The test results showed that GFRP-reinforced GPC concrete has similar bond strength as that of GFRP-reinforced OPC concrete. The increase in embedment length resulted in the decrease of the bond strength as well as a change in the failure mode of the specimens. Furthermore, the experimental results were used to generate a constitutive bond-slip law. Finally, finite-element modeling is performed by using the constitutive bond-slip law to investigate strain and bond distribution along the embedment length of the bar.
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References
ABAQUS [Computer software]. Dassault Systèmes, Waltham, MA.
ACI (American Concrete Institute). (2004). “Guide test methods for fiber-reinforced polymers (FRPs) for reinforcing or strengthening concrete structures.”, Farmington Hills, MI.
AS (Australian Standard). (2010). “General purpose and blended cements.” AS 3972-2010, Sydney, Australia.
ASTM. (2010). “Standard test method for comparing bond strength of steel reinforcing bars to concrete using beam-end specimens.” ASTM A944-10, West Conshohocken, PA.
ASTM. (2011). “Standard test method for splitting tensile strength of cylindrical concrete specimens.” ASTM C496/496M-11, West Conshohocken, PA.
ASTM. (2012). “Standard specification for coal fly ash and raw or calcined natural pozzolan for use in concrete.” ASTM C618-12a, West Conshohocken, PA.
ASTM. (2013). “Standard test method for total evaporable moisture content of aggregate by drying.” ASTM C566-13, West Conshohocken, PA.
ASTM. (2014). “Standard test method for static modulus of elasticity and poison’s ratio of concrete in compression.” ASTM C469/469M-14, West Conshohocken, PA.
ASTM. (2015a). “Standard test method for compressive strength of cylindrical concrete specimens.” ASTM C39/39M-15a, West Conshohocken, PA.
ASTM. (2015b). “Standard test method for relative density (specific gravity) and absorption of coarse aggregate.” ASTM C127-15, West Conshohocken, PA.
ASTM. (2015c). “Standard test method for slump of hydraulic-cement concrete.” ASTM C143/143M-15, West Conshohocken, PA.
Baena, M., Torres, L., Turon, A., and Barris, C. (2009). “Experimental study of bond behaviour between concrete and FRP bars using a pull-out test.” Compos. Part B Eng., 40(8), 784–797.
Bank, L. C. (2006). Composites for construction: Structural design with FRP materials, Wiley, Hoboken, NJ.
Benmokrane, B., Tighiouart, B., and Chaallal, O. (1996). “Bond strength and load distribution of composite GFRP reinforcing bars in concrete.” ACI Mater. J., 93(3), 246–252.
Chaallal, O., and Benmokrane, B. (1993). “Pull out and bond of glass-fibre rods embedded in concrete and cement grout.” Mater. Struct., 26(3), 167–175.
Chang, E. H., Sarkar, P., Natalia, L., and Rangan, B. (2009). “Bond behaviour of reinforced fly ash-based geopolymer concrete beams.” 24th Biennial Conf. of the Concrete Institute of Australia: Concrete Solutions, Concrete Institute of Australia, North Sydney, Australia, 1–10.
Collins, M. P., and Mitchell, D. (1991). Prestressed concrete structures, Prentice-Hall, Englewood Cliffs, NJ.
Cosenza, E., Manfredi, G., and Realfonzo, R. (1995). “Analytical modelling of bond between FRP reinforcing bars and concrete.” Proc., 2nd Int. RILEM Symp. on Non-metallic (FRP) Reinforcement for Concrete Structures, E&FN Spon, London, 164–171.
Cosenza, E., Manfredi, G., and Realfonzo, R. (1997). “Behaviour and modelling of bond of FRP rebars to concrete.” J. Compos. Constr., 40–51.
Cui, Y., and Kayali, O. (2013). “Bond performance of steel bar and fly ash based geopolymer concrete.” 26th Biennial Conf. of the Concrete Institute of Australia: Understanding Concrete, Concrete Institute of Australia, North Sydney, Australia.
Davidovits, J. (1988). “Geopolymer chemistry and properties.” Proc., Geopolymer Conf., 1st European Conf. on Soft Mineralogy, Geopolymer Institute, Saint-Quentin, France, 25–48.
Eligehausen, R., Popov, E. P., and Bertero, V. V. (1983). “Local bond stress-slip relationships of deformed bars under generalized excitations: Experimental results and analytical model.”, Univ. of California, Earthquake Engineering Research Centre, Berkeley, CA.
Focacci, F., Nanni, A., and Bakis, C. E. (2000). “Local bond-slip relationship for FRP reinforcement in concrete.” J. Compos. Constr., 24–31.
Hardjito, D., and Rangan, B. V. (2005). “Development and properties of low calcium fly ash-based geopolymer concrete.”, Curtin Univ. of Technology, Perth, Australia.
Henriques, J., da Silva, L. S., and Valente, I. B. (2013). “Numerical modelling of composite beam to reinforced concrete wall joints. I: Calibration of joint components.” Eng. Struct., 52, 747–761.
Jankowiak, T., and Lodygowski, T. (2005). “Identification of parameters of concrete damage plasticity model.” Found. Civ. Environ. Eng., 4, 53–69.
Junaid, M. T., Kayali, O., Khennane, A., and Black, J. (2015a). “A mix design procedure for low calcium alkali activated fly ash-based concretes.” Constr. Build. Mater., 79, 301–310.
Junaid, M. T., Khennane, A., and Kayali, O. (2015b). “Performance of fly ash based geopolymer concrete made using non-pelletized fly ash aggregates after exposure to high temperature.” Mater. Struct., 48(10), 3357–3365.
Junaid, M. T., Khennane, A., Kayali, O., Sadaoui, A., Picard, D., and Fafard, M. (2014). “Aspects of the deformational behaviour of alkali activated fly ash concrete at elevated temperatures.” Cem. Concr. Res., 60, 24–29.
Kessler, R. J., and Powers, R. G. (1998). “Corrosion of epoxy-coated rebars keys segmental bridge.”, Florida DOT, Corrosion Research Laboratory, Gainesville, FL.
Lee, Y. H., Kim, M. S., Kim, H., Lee, J., and Kim, D. (2013). “Experimental study on bond strength of fiber reinforced polymer rebars in normal strength concrete.” J. Adhes. Sci. Technol., 27(5–6), 508–522.
Malvar, L. J. (1994). “Bond stress-slip characteristics of FRP rebars.”, Naval Facilities Engineering Service Center, Port Hueneme, CA.
Maranan, G., Manalo, A., Karunasena, K., and Benmokrane, B. (2015). “Bond stress-slip behavior: Case of GFRP bars in geopolymer concrete.” J. Mater. Civ. Eng., 04014116.
Okelo, R., and Yuan, R. L. (2005). “Bond strength of fiber reinforced polymer rebars in normal strength concrete.” J. Compos. Constr., 203–213.
Pecce, M., Manfredi, G., Realfonzo, R., and Cosenza, E. (2001). “Experimental and analytical evaluation of bond properties of GFRP bars.” J. Mater. Civ. Eng., 282–290.
Sarker, P. K. (2011). “Bond strength of reinforcing steel embedded in fly ash-based geopolymer concrete.” Mater. Struct., 44(5), 1021–1030.
Sofi, M., van Deventer, J. S. J., Mendis, P. A., and Lukey, G. C. (2007). “Bond performance of reinforcing bars in inorganic polymer concrete (IPC).” J. Mater. Sci., 42(9), 3107–3116.
Tao, S., Ehsani, M. R., and Saadatmanesh, H. (1992). “Bond strength of straight GFRP rebars.” Proc., Materials Engineering Congress: Material Performance and Prevention of Deficiencies and Failures, ASCE, Reston, VA, 598–605.
Thorenfeldt, E., Tomaszewicz, A., and Jensen, J. J. (1987). “Mechanical properties of high strength concrete and application in design.” Proc., Symp. on Utilization of High Strength Concrete, Tapir, Trondheim, Norway, 149–159.
Tighiouart, B., Benmokrane, B., and Gao, D. (1998). “Investigation of bond in concrete member with fiber reinforced polymer (FRP) bars.” Constr. Build. Mater., 12(8), 453–462.
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Published In
Journal of Composites for Construction
Volume 20 • Issue 5 • October 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Oct 27, 2015
Accepted: Dec 29, 2015
Published online: Mar 3, 2016
Discussion open until: Aug 3, 2016
Published in print: Oct 1, 2016
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