Flexural Behavior of Self Compacting Concrete T-Beams Reinforced with AFRP

Author:  Sinan Abdulhkaleq Yaseen

Abstract:  In this paper, an experimental work is carried out to study behavior and performance of Self compacted reinforced concrete (SCC) T-section beams reinforced with Aramid fiber reinforced polymers (AFRP). Key variables taken into consideration were flexural reinforcement ratio, and different self-compacting concrete mixes having different strengths. Normal strength steel bars was witnessed for data comparison. 9 samples of T-sections were designed using (AFRP) to be weak in flexure. 3 samples of T-sections were used with normal steel bars as control samples for comparison. The effect of these fiber reinforcement contents on flexural behavior and crack pattern were observed during third-point loading tests. A data comparison was performed between experimental and analytical beam calculation using ACI 440 as an applied design source. The results show that the final deflection was more in AFRP compared with steel reinforced beams indicating to significant enhancement in strength and toughness. The ultimate capacity of AFRP beams increased more than steel reinforced beams by increasing self-compacting concrete strength. The reinforcement ratio improves the final resisting load as the ratio increases. The maximum observed crack-width in beams reinforced with AFRP bars is three to five times that of normal steel reinforced beams. The exactness of the data depends on both the compressive strength and reinforcement ratio for both AFRP and conventional steel bars. It is seen from data compared with experimental work the ACI 440 method was more conservative when using AFRP reinforcement and SCC.

Keywords: T-Beam, Aramid Fiber Reinforced Polymer, Flexural Behavior and Performance, Self-Compacting Concrete

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doi: 10.23918/eajse.v4i2p178

References

ACI 440.1R-06. (2006). ACI Committee 440 Guide for the Design and Construction of Concrete Reinforced with FRP Bars, American Concrete Institute, Farmington Hills, Michigan.

Buyukkaragoz, A., Kalkan, I., & Lee, J. H. (2013). A Numerical Study of the Flexural Behavior of Concrete Beams Reinforced with AFRP Bars. Strength of Materials Journal, 45(6), 716–729.

Daia, Z., & Thomas, V. (2002). Checking the Limit State of Existing T-Beam Girder Bridges. 6th International Conference on Short & Medium Span Bridges SMSB-VI, Vancouver BC, Canada, 1, 691-698.

Efe, S., & Head, M. (2014). Structural behavior and response analysis of aramid fiber reinforced polymer reinforced bridge columns under combined loading. Tenth U.S. National Conference on Earthquake Engineering Frontiers of Earthquake Engineering. Anchorage, Alaska.

Erki, M. A., & Rizkalla, S. H. (1993). FRP reinforcement for concrete structures. A sample of international production.

Guowei, N., Bo, L., Xiao L., & Wenshang, Y. (2011). Experimental Study on concrete T-Beams strengthened with Carbon Fiber reinforced Polymer (CFRP) Sheets on Three Sides. Systems Engineering Procedia, 1, 69–73.

Lee, H. K., Cheong, S. H., Ha, S. K., & Lee, C. G. (2011). Behavior and performance of RC T-section deep beams externally strengthened in shear with CFRP sheets. Journal of Composite Structures, 93, 911–922.

Ola G., & Jonas H. (1993). Aramid Fiber Rods as Reinforcement in Concrete. Lund Institute of Technology, Department of Structural Engineering, Report TVBK-5067, Sweden.

Raya, H. H., & Bilal, S. H. (2015).  Performance of high strength self-compacting concrete beams under different modes of failure. International Journal of Concrete Structures and Materials, 9(1), 69–88.

Rolland, A., Chataigner, S., Benzarti, K., Quiertant, M., Argoul, P., & Paul, J-M. (2014). Mechanical behaviour of aramid fiber reinforced polymer (AFRP) rebar/concrete interfaces. Transport Research Arena, Paris.

Tavares, D. H., Giongo, J. S., & Paultre, P. (2008). Behavior of reinforced concrete beams reinforced with GFRP bars. IBRACON Structures and Materials Journal, 1(3), 285 – 295.

Tiago, C., Carlos, C., & Hugo, B. (2010). Raquel Fernandes Paula. Flexural Behavior of RC T-Beams Strengthened with Different FRP Materials. The Third International fib Congress and Exhibition “Think Globally, Build Locally”.

Yasser, S. (2012). Structural performance of Self-Consolidating Concrete used in reinforced concrete beams. KSCE Journal of Civil Engineering, 16(4), 618–626.