Open Access Open Access  Restricted Access Subscription or Fee Access

The Behavior of Reinforced Concrete Members with Section Enlargement Using Self-Compacting Concrete

Nuroji Nuroji(1*), Chung-Chan Hung(2), Blinka Hermawan Prasetya(3), Aylie Han(4)

(1) Engineering Faculty, Diponegoro University, Indonesia
(2) Department of Civil Engineering, National Cheng Kung University, Taiwan, R.O.C.
(3) Diponegoro University, Indonesia
(4) Diponegoro University, Indonesia
(*) Corresponding author


DOI: https://doi.org/10.15866/irece.v11i3.18574

Abstract


This paper presents the experimental results of section enlargement effects on prismatic reinforced concrete members. 125 by 200 mm reinforced concrete members with a compressive strength of 20.3 MPa reinforced with D12 steel bars having a yield stress of 335 MPa situated in the tension and compression area, were produced. Two specimens were prepared, the first functioning as the control element and designated as the Control Beam (CB). The second strengthened with a section enlargement using Self-Compacting Concrete (SCC) marked as the Strengthened Beam (SB). The SCC had a 28-day compressive strength of 23.9 MPa. The dimensions of the enlarged beam were 200 by 300 mm. The two specimens CB and SB were tested with a two-point loading system. Based on the tests data, the load–displacement and moment–curvature relationships characterizing the beams were generated. From the results it was concluded that the enlargement affected the load-carrying capacity and stiffness positively. The SB member had a six times higher moment capacity, while the stiffness performance was enhanced seven times when compared to the CB specimen. On the other hand, it was also demonstrated that the ductility of the SB decreased as a consequence of the increase in span-to-depth ratio. The study was expanded based on the rational analyses to evaluate the influence of the additional tensile steel and concrete strength ratio of the enlarged section.
Copyright © 2020 Praise Worthy Prize - All rights reserved.

Keywords


Flexural Member; Concrete Beam; Section-Enlargement; Self-Compacting Concrete; External Strengthening

Full Text:

PDF


References


Attari N., Amziane S., Chemrouk M., Flexural Strengthening of Concrete Beams Using CFRP, GFRP and Hybrid FRP Sheets, Construction and Building Materials, Vol. 37:746–757, December 2012.
https://doi.org/10.1016/j.conbuildmat.2012.07.052

Wang Y., Yang S., Han M., Yang X., Experimental Study of Section Enlargement with Reinforced Concrete to Increase Shear Capacity for Damaged Reinforced Concrete Beams, Applied Mechanics and Materials, Vol. 256-259: 1148-1153, 2013.
https://doi.org/10.4028/www.scientific.net/amm.256-259.1148

Zhang H.Y., Yan J., Kodur V., Cao L., Mechanical behavior of concrete beams shear strengthened with textile reinforced geopolymer mortar, Engineering Structures, Vol. 196, Art. 109348, October 2019.
https://doi.org/10.1016/j.engstruct.2019.109348

Vatovec M., Kelley P.L., Alkhrdaji T., and Nanni A., Evaluation and CFRP Strengthening of Existing Garage: Case Study, ASCE Journal of Composites for Construction, Vol. 6(3), 184 – 193, 2002.
https://doi.org/10.1061/(asce)1090-0268(2002)6:3(184)

Zhang Y., Repair and Strengthening of Reinforced Concrete Beams, Honors Thesis, The Ohio State University, 2012.

Li L., Lo S. H., Su R.K.-L., Study of Moderately Reinforced Concrete Beams Strengthened by Bolted-Side Steel Plates, Design, Fabrication and Economy of Metal Structures, Ch. 86, Springer Berlin Heidelberg (2013).
https://doi.org/10.1007/978-3-642-36691-8_86

Demir A., Ercan E., Demir D.D., Strengthening of reinforced concrete beams using external steel members, Steel and Composite Structures, Vol. 27 (4), 453-464, May 2018.
https://doi.org/10.12989/scs.2018.27.4.453

Djeddi, F., Ghernouti, Y., Abdelaziz, Y., Experimental Investigation of FRP-Concrete Hybrid Beams, (2015) International Review of Civil Engineering (IRECE), 6 (6), pp. 151-155.
https://doi.org/10.15866/irece.v6i6.8187

Tbatou, T., El Youbi, M., Dynamic and Structural Study of a RC Building Braced by FRP Composite Materials, (2020) International Review of Civil Engineering (IRECE), 11 (1), pp. 1-9.
https://doi.org/10.15866/irece.v11i1.16991

Leung C.K.Y., FRP Debonding from a Concrete Substrate: Some Recent Findings Against Conventional Belief, Cement & Concrete Composites, Vol. 28 (8): 742–748, September 2006.
https://doi.org/10.1016/j.cemconcomp.2006.05.015

Ceroni F., Experimental Performances of RC Beams Strengthened with FRP Materials. Construction and Building Materials Vol. 24 (9):1547–1559, September 2010.
https://doi.org/10.1016/j.conbuildmat.2010.03.008

Spadea G., Bencardino F., Sorrenti F., Swamy R.N., Structural Effectiveness of FRP Materials in Strengthening RC Beams, Engineering Structures, Vol. 99:631–641, 2015.
https://doi.org/10.1016/j.engstruct.2015.05.021

Sri T., Han A.L., Banu A.H., An Experimental Study to the Influence of Fiber Reinforced Polymer (FRP) Confinement on Beams Subjected to Bending and Shear, Procedia Engineering, Vol. 125:1070-1075, 2015.
https://doi.org/10.1016/j.proeng.2015.11.164

Sri T., Han A.L., Buntara S.G., Revitalization of Cracked Flexural Members Using Retrofitting and Synthetic Wrapping, Procedia Engineering, Vol. 171:1123-1128, 2017.
https://doi.org/10.1016/j.proeng.2017.01.472

Bekkar, I., Djermane, M., Bounoua, T., Repairing of Reinforced Concrete Beam by Composite Plate, (2016) International Review of Civil Engineering (IRECE), 7 (1), pp. 1-4.
https://doi.org/10.15866/irece.v7i1.5633

Ceroni F., Ianniciello M., Pecce M., Bond Behavior of FRP Carbon Plates Externally Bonded Over Steel and Concrete Elements: Experimental Outcomes and Numerical Investigations, Composites, Part B, Vol. 92:434–446, May 2016.
https://doi.org/10.1016/j.compositesb.2016.02.033

Huang L., Yan B., Yan L., Xu Q., Haozhi, Kasal B., Reinforced concrete beams strengthened with externally bonded natural flax FRP plates, Composites, Part B, Vol. 91:569–578, April 2016.
https://doi.org/10.1016/j.compositesb.2016.02.014

Ghazy M.F., Performance of Self Compacting Concrete, Ain Shams Journal of Civil Engineering (ASJCE), Vol. 2:23-39, September 2009.

Mittal M., Basu S., Sofi A., Effect of Sika Viscocrete on Properties of Concrete, International Journal of Civil Engineering (IJCE), Vol. 2 (4):61-66, September 2013.

Han A., Antonius, Okiyarta A.W., Experimental Study of Steel-fiber Reinforced Concrete Beams with Confinement, Procedia Engineering, Vol. 125:1030-1035, 2015.
https://doi.org/10.1016/j.proeng.2015.11.158

Bouamra Y., Ait Tahar K., Mechanical performance of a confined reinforced concrete beam, Procedia Structural Integrity, Vol. 5:155-162, 2017.
https://doi.org/10.1016/j.prostr.2017.07.086

Huang L., Zhang C., Yan L., Kasal B., Flexural behavior of U-shape FRP profile-RC composite beams with inner GFRP tube confinement at concrete compression zone, Composite Structures, Vol. 184:674-687, January 2018.
https://doi.org/10.1016/j.compstruct.2017.10.029

Moodi Y., Sohrabi M.R., Mousavi S.R., Effects of stirrups in spliced region on the bond strength of corroded splices in reinforced concrete (RC) beams, Construction and Building Materials, Vol. 230, Art. 116873, January 2020.
https://doi.org/10.1016/j.conbuildmat.2019.116873

Hung C. C., Chen, Y. S., Innovative ECC Jacketing for Retrofitting Shear-Deficient RC Members. Construction & Building Materials. Vol.111: 408-418, 2016.
https://doi.org/10.1016/j.conbuildmat.2016.02.077

Słowik, M., The Influence of Effective Length on Shear Failure in Concrete Beams, (2017) International Journal of Earthquake Engineering and Hazard Mitigation (IREHM), 5 (4), pp. 117-123.


Refbacks

  • There are currently no refbacks.



Please send any question about this web site to info@praiseworthyprize.com
Copyright © 2005-2020 Praise Worthy Prize