Computers and Concrete

  • 제19권1호
  • /
  • Pages.51-58
  • /
  • 2017
  • /
  • 1598-8198(pISSN)
  • /
  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Effect of GGBFS on time-dependent deflection of RC beams

  • Shariq, M. (Department of Civil Engineering, Aligarh Muslim University) ;
  • Abba, H. (Research and Studies in Strengthening and Rehabilitation of Structures, Department of Civil Engineering, King Saud University) ;
  • Prasad, J. (Department of Civil Engineering, Indian Institute of Technology Roorkee)
  • 투고 : 2016.08.22
  • 심사 : 2016.10.18
  • 발행 : 2017.01.25
⟨ 이전 논문 다음 논문 ⟩

초록

The paper presents the experimental investigations for studying the effect of ground granulated blast furnace slag (GGBFS) on the time-dependent deflection of reinforced concrete (RC) beams due to creep and shrinkage. The RC beams were reinforced with 2-10 mm bars at tension side and subjected to constant sustained two-point loading for the period of 150 days. The amount of cement replacement by GGBFS was varied from 0 to 60% with an increment of 20%. The total deflection was measured at different ages of up to 150 days under sustained loads. The experiments revealed that the time-dependent deflection of the reinforced concrete RC beams containing GGBFS was higher than that of plain concrete RC beams. At 150 days, the average creep and shrinkage deflection of RC beams containing 20%, 40% and 60% GGBFS was 1.25, 1.45 and 1.75 times higher than the plain concrete beams. A new model, which is an extension of authors' earlier model, is proposed to incorporate the effect of GGBFS content in predicting the long-term deflection of RC beams. Besides validating the new model with the current data with higher percentage of tension reinforcement, it was also used to predict the authors' earlier data containing lesser percentage of tension reinforcement with reasonable accuracy.

키워드

참고문헌

  1. ACI 318 (2011), Building Codes Requirements for Structural Concrete and Commentary, ACI, Farmington Hills, Michigan, USA, ACI Committee 318.
  2. ACI 440.1R (2006), Guide for the Design and Construction of Structural Concrete Reinforced with FRP Bars, ACI, Farmington Hills, Michigan, USA, ACI Committee 440.
  3. Bakoss, S.L., Gilbert, R.I., Faulkes, K.A. and Pulmano, V.A. (1982), "Long-term deflections of reinforced concrete beams", Mag. Concrete Res., 34(121), 203-212. https://doi.org/10.1680/macr.1982.34.121.203
  4. Bencardino, F. and Condello, A. (2014), "Experimental study and numerical investigation of behavior of RC beams strengthened with steel reinforced grout", Comput. Concrete, 14(6), 411-425.
  5. Bencardino, F. and Condello, A. (2015), "SRG/SRP-concrete bond-slip laws for externally strengthened RC beams", Compos. Struct., 132, 804-815. https://doi.org/10.1016/j.compstruct.2015.06.068
  6. Branson, D.E. (1971), "Compression steel effect on long-time deflection", ACI J., 68(8), 555-559.
  7. BS 6699 (1992), Specification for Ground Granulated Blast Furnace Slag for Use with Portland Cement, British Standard Institution, London, UK.
  8. Buratti, N., Mazzotti, C. and Savoia, M. (2010), "Long-term behaviour of fiber-reinforced self-compacting concrete beams", Des. Product. Placem. Self-Consolid. Concrete, RILEM, 1, 439-450.
  9. Choi, W. and Yun, H. (2013), "Long-term deflection and flexural behavior of reinforced concrete beams with recycled aggregate", Mater. Des., 51, 742-750. https://doi.org/10.1016/j.matdes.2013.04.044
  10. Clarke, G., Scholz, H. and Alexander, M. (1988), "New method to predict the creep deflection of cracked reinforced concrete flexural members", ACI Mater. J., 85(2), 95-101.
  11. Corley, W.G. and Sozen, M.A. (1966), "Time-dependent deflection of reinforced concrete beams", ACI J., 63(3), 373-386.
  12. CSA A23.3-04 (2004), Canadian Standard Association Design of Concrete Structures, Ontario, Canada.
  13. Dias, M.M., Tamayo, J.L.P., Morsch, I.B. and Awruch, A.M. (2015), "Time dependent finite element analysis of steelconcrete composite beams considering partial interaction", Comput. Concrete, 15(4), 687-707. https://doi.org/10.12989/cac.2015.15.4.687
  14. EN 1992-1-1 (2004), European Standard Eurocode 2: Design of Concrete Structures-Part 1-1: General Rules and Rules for Buildings, Brussels.
  15. Espion, B. and Halleux, P. (1990), "Long-term deflections of reinforced concrete beams: Reconsideration of their variability", ACI Struct. J., 87(2), 232-236.
  16. Ezeberry, P.J., Corres, P.H., Viktor, G. and Perez, C.A. (2014), "Investigating deformations of RC beams: Experimental and analytical study", Comput. Concrete, 13(6), 799-827. https://doi.org/10.12989/cac.2014.13.6.799
  17. Gesund, H. (1962), "Shrinkage and creep influence on deflections and moments of reinforced concrete beams", ACI J., 59(5), 687-704.
  18. Ghali, A. (1993), "Deflection of reinforced concrete members: A critical review", ACI Struct. J., 90(4), 364-373.
  19. Ghali, A. and Azarnejad, A. (1999), "Deflection prediction of members of any concrete strength", ACI Struct. J., 96(5), 807-816.
  20. Gilbert, R.I. (2012), "Creep and shrinkage induced deflections in RC beams and slabs", ACI Spec. Publ., 284, 1-16.
  21. IS 1786 (1985), Indian Standard Specification for High Strength Deformed Steel Bars and Wires for Concrete Reinforcement, Bureau of Indian Standard, New Delhi, India.
  22. IS 383 (1970), Indian Standard Specification for Coarse and Fine Aggregate from Natural Sources for Concrete, Bureau of Indian Standard, New Delhi, India.
  23. IS 4031 (1999), Indian Standard Methods of Physical Tests for Hydraulic Cement (Part 1 to 15), Bureau of Indian Standard, New Delhi, India.
  24. IS 8112 (1989), Indian Standard Ordinary Portland Cement, 43 Grade-Specification, Bureau of Indian Standard, New Delhi, India.
  25. Konyi, K.H. (1963), "Tests on beams with sustained loading", Mag. Concrete Res., 15(43), 3-14. https://doi.org/10.1680/macr.1963.15.43.3
  26. Kumutha, R. and Vishnuram, B.G. (2015), "Flexural behaviour of fibre reinforced geopolymer concrete composite beams", Comput. Concrete, 15(3), 437-459. https://doi.org/10.12989/cac.2015.15.3.437
  27. Li, C.Q. (1993), "Time-dependent structural serviceability analysis of concrete structures", ACI Struct. J., 90(2), 204-209.
  28. Mari, A.R., Bairan, J.R. and Duarte, N. (2010), "Longterm deflections in cracked reinforced concrete flexural members", Eng. Struct., 32(3), 829-842. https://doi.org/10.1016/j.engstruct.2009.12.009
  29. Mias, C., Torres, L., Turon, A. and Barris, C. (2013a), "Experimental study of immediate and time-dependent deflections of GFRP reinforced concrete beams", Compos. Struct., 96, 279-285. https://doi.org/10.1016/j.compstruct.2012.08.052
  30. Mias, C., Torres, L., Turon, A. and Sharaky, I.A. (2013b), "Effect of material properties on long-term deflections of GFRP reinforced concrete beams", Const. Build. Mater., 41, 99-108. https://doi.org/10.1016/j.conbuildmat.2012.11.055
  31. Paulson, K.A., Nilson, A.H. and Hover, K.C. (1991), "Long-term deflection of high-strength concrete beams", ACI Mater. J., 88(2), 197-206.
  32. Rosowsky, D.V., Stewart, M.G. and Khor, E.H. (2000), "Earlyaged loading and long-term deflections of reinforced concrete beams", ACI Struct. J., 97(3), 517-524.
  33. Shariq, M. Prasad, J. and Abbas, H. (2013), "Long-term deflection of RC beams containing GGBFS", Constr. Build. Mater., 65(24), 1441-1462.
  34. Shariq, M. Prasad, J. and Masood, A. (2010), "Effect of GGBFS on time dependent compressive strength of concrete", Constr. Build. Mater., 24, 1469-1478. https://doi.org/10.1016/j.conbuildmat.2010.01.007
  35. Tan, K.H., Paramasivam, P. and Tan, K.C. (1994a), "Instantaneous and long-term deflections of steel fiber reinforced concrete beams", ACI Struct. J., 91(4), 384-393.
  36. Tan, K.H., Paramasivam, P. and Tan, K.C. (1994b), "Creep and shrinkage deflections of RC beams with steel fibers", ASCE J. Mater. Civil Eng., 6(4), 474-494. https://doi.org/10.1061/(ASCE)0899-1561(1994)6:4(474)
  37. Vasanelli, E., Micelli, F., Aiello, M.A. and Plizzari, G. (2013), "Long term behavior of FRC flexural beams under sustained load", Eng. Struct., 56, 1858-1867. https://doi.org/10.1016/j.engstruct.2013.07.035
  38. Visintin, P., Oehlers, D.J. and Haskett, M. (2013), "Partialinteraction time dependent behaviour of reinforced concrete beams", Eng. Struct., 49, 408-420. https://doi.org/10.1016/j.engstruct.2012.11.025
  39. Yu, W.W. and Winter, G. (1960), "Instantaneous and long-term deflections of reinforced concrete beams under working loads", ACI J., 57(7), 29-50.
  40. Zerbino, R.L. and Barragan, B.E. (2012), "Long-term behavior of cracked steel fiber-reinforced concrete beams under sustained loading", ACI Mater. J., 109(2), 215-224.
  41. Zhou, W. and Kokai, T. (2010), "Deflection calculation and control for reinforced concrete flexural members", J. Civil Eng., 37(1), 131-134.

피인용 문헌

  1. Dynamic bending response of SWCNT reinforced composite plates subjected to hygro-thermo-mechanical loading vol.20, pp.2, 2017, https://doi.org/10.12989/cac.2017.20.2.229
  2. Influence of high sustained loads and longitudinal reinforcement on long-term deformation of reinforced concrete beams vol.30, pp.None, 2017, https://doi.org/10.1016/j.jobe.2020.101241