Advances in concrete construction

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Flexural studies on reinforced geopolymer concrete beams under pure bending

  • Sreenivasulu, C. (Department of Civil Engineering, Jawaharlal Nehru Technological University) ;
  • Jawahar, J. Guru (Department of Civil Engineering, Annamacharya Institute of Technology and Sciences) ;
  • Sashidhar, C. (Department of Civil Engineering, Jawaharlal Nehru Technological University)
  • Received : 2018.06.26
  • Accepted : 2019.04.19
  • Published : 2019.08.25
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Abstract

The present investigation is mainly focused on studying the flexural behavior of reinforced geopolymer concrete (RGPC) beams under pure bending. In this study, copper slag (CS) was used as a partial replacement of fine aggregate. Sand and CS were blended in different proportions (100:0, 80:20, 60:40 and 40:60) (sand:CS) by weight. Fly ash and ground granulated blast furnace slag (GGBS) were used as binders and combination of sodium hydroxide (8M) and sodium silicate solution were used for activating the binders. The reinforcement of RGPC beam was designed as per guidelines given in the IS 456-2000 and tested under pure bending (two-point loading) after 28 days of ambient curing. After conducting two point load test the flexural parameters viz., moment carrying capacity, ultimate load, service load, cracking moment, cracking load, crack pattern and ultimate deflection were studied. From the results, it is concluded that RGPC beams have shown better performance up to 60% of CS replacement.

Keywords

References

  1. Abhishek, B., Chouhan, R.K., Manish, M. and Amritphale, S.S. (2015), "Fly ash based geopolymer concrete a new technology towards the greener environment: A review", Int. J. Innov. Res. Sci. Eng. Technol., 4(12), 12178-12186.
  2. ASTM C 618-03 (2003), Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete, West Conshohocken, ASTM International, PA.
  3. Chithra, S., Kumar, S.R.R.S., Chinnaraju, K. and Alfin Ashmita, F. (2016), "A comparative study on the compressive strength prediction models for high performance concrete containing nano silica and copper slag using regression analysis and artificial neural networks", Constr. Build. Mater., 114, 528-535. https://doi.org/10.1016/j.conbuildmat.2016.03.214.
  4. Detphan, S. and Chindaprasirt, P. (2009), "Preparation of fly ash and rice husk ash geopolymer", Int. J. Miner. Metal. Mater., 16(6), 720-726. https://doi.org/10.1016/S1674-4799(10)60019-2.
  5. Ekaputri, J.J., Junaedi, S. and Wijaya. (2017), "Effect of curing temperature and fiber on metakaolin-based geopolymer", Procedia Eng., 171, 572-583. https://doi.org/10.1016/j.proeng.2017.01.376.
  6. Hardjito, D. and Rangan, B. (2005), "Development and properties of low-calcium fly ash-based geopolymer concrete", Perth, Australia.
  7. Hardjito, D. and Wallah, S. (2002), "Study on engineering properties of fly ash-based geopolymer concrete", J. Aust. Ceramic Soc., 38(1), 44-47.
  8. Hassan, A.A.A., Hossain, K.M.A. and Lachemi, M. (2010), "Structural assessment of corroded self- consolidating concrete beams", Eng. Struct., 32(3), 874-885. https://doi.org/10.1016/j.engstruct.2009.12.013.
  9. He, J., Jie, Y., Zhang, J., Yu, Y. and Zhang, G. (2013), "Synthesis and characterization of red mud and rice husk ash-based geopolymer composites", Cement Concrete Compos., 37, 108-118. https://doi.org/10.1016/j.cemconcomp.2012.11.010.
  10. IS 456 (2000), Plain and Reinforced Concrete - Code of Practice (CED 2: Cement and Concrete), Bureau of Indian Standards, New Delhi, India.
  11. Mahendran, K. and Arunachelam, N. (2015), "Study on utilization of copper slag as fine aggregate in geopolymer concrete", Int. J. Appl. Eng. Res., 10(53), 336-340.
  12. Mahendran, K. and Arunachelam, N. (2016), "Performance of fly ash and copper slag based geopolymer concrete", Indian J. Sci. Technol., 9(2), 1-6. https://doi.org/10.17485/ijst/2016/v9i2/86359.
  13. Mithun, B.M. and Narasimhan, M.C. (2016), "Performance of alkali activated slag concrete mixes incorporating copper slag as fine aggregate", J. Clean. Prod., 112, 837-844. https://doi.org/10.1016/j.jclepro.2015.06.026.
  14. Neethu Susan, M. and Usha, S. (2016), "Effects of copper slag as partial replacement for fine aggregate in geopolymer concrete", International Conference on Emerging Trends in Engineering and Management, 73- 77.
  15. Raman, S.N., Ngo, T., Mendis, P. and Mahmud, H.B. (2011), "High-strength rice husk ash concrete incorporating quarry dust as a partial substitute for sand", Constr. Build. Mater., 25(7), 3123-3130. https://doi.org/10.1016/j.conbuildmat.2010.12.026.
  16. Rangan, B.V. (2008), Fly Ash-based Geopolymer Concrete, Perth, Australia.
  17. Singh, G., Das, S., Ahmed, A.A., Saha, S. and Karmakar, S. (2015), "Study of granulated blast furnace slag as fine aggregates in concrete for sustainable infrastructure", Procedia-Soc. Behav. Sci., 195, 2272-2279. https://doi.org/10.1016/j.sbspro.2015.06.316.
  18. Sreenivasulu, C., Guru Jawahar, J. and Sashidhar, C. (2018), "Predicting compressive strength of geopolymer concrete using NDT techniques", Asian J. Civil Eng., 19(12), 513-525. https://doi.org/10.1007/s42107-018-0036-1.
  19. Sreenivasulu, C., Guru Jawahar, J. and Sashidhar, C. (2018), "Study and predicting the stress-strain characteristics of geopolymer concrete under compression", Case Stud. Constr. Mater., 8, 172-192. https://doi.org/10.1016/j.cscm.2018.01.010.
  20. Sreenivasulu, C., Guru Jawahar, J., Vijaya Sekhar Reddy, M. and Pavan Kumar, D. (2016), "Effect of fine aggregate blending on short-term mechanical properties of geopolymer concrete", Asian J. Civil Eng., 17(5), 537-550.
  21. Sreenivasulu, C., Ramakrishnaiah, A. and Gurujawahar, J. (2015), "Mechanical properties of geopolymer concrete using granite slurry as sand replacement", Int. J. Adv. Eng. Technol., 8(2), 83-91.

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