Computers and Concrete

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Efficiency factor of high calcium Class F fly ash in concrete

  • Sata, V. (Sustainable Infrastructure Research and Development Center, Department of Civil Engineering, Faculty of Engineering, Khon Kaen University) ;
  • Khammathit, P. (Sustainable Infrastructure Research and Development Center, Department of Civil Engineering, Faculty of Engineering, Khon Kaen University) ;
  • Chindaprasirt, P. (Sustainable Infrastructure Research and Development Center, Department of Civil Engineering, Faculty of Engineering, Khon Kaen University)
  • Received : 2010.08.10
  • Accepted : 2010.10.12
  • Published : 2011.10.25
⟨ Previous Next ⟩

Abstract

This paper studied the cement efficiency factor (k factor) of high calcium Class F fly ash. This k factor represents a unit of fly ash with efficiency equivalent to k unit of cement. The high calcium Class F fly ash was used to replace cement in concrete. The modified Bolomey's law with linear relationship was used for the analysis of the result of compressive strength, cement to water ratio (c/w) and fly ash to water ratio (f/w) by using the multi-linear regression to determine the k factor and other constants in the equations. The results of analysis were compared with the results from other researcher and showed that the k factor of high calcium Class F fly ash depends on the fineness of fly ash, replacement level and curing age. While the amount of CaO content in Class F fly ash not evident. Furthermore, necessary criteria and variables for the determination of the k factor including the use of the k factor in concrete mix design containing fly ash were proposed.

Keywords

References

  1. ACI Committee 211 (2000), ACI 211.1-91 Standard practices for selecting proportions for normal, heavyweight and mass concrete, ACI manual of concrete practice part I.
  2. Abrams, A.D. (1918), Design of concrete mixtures, Structure Materials Research Laboratory, Bulletin 1, Levis Institute, Chicaco.
  3. ASTM C618-08a. (2008), Standard specification for coal fly ash and raw or calcined natural pozzolan for use in concrete, Book of ASTM Standards, Vol. 04.02.
  4. Bharatkumar, B.H., Narayanan, R., Raghuprasad, B.K. and Ramachandramurthy, D.S. (2001), "Mix proporting of high performance concrete", Cement Concrete Compos., 23,71-80. https://doi.org/10.1016/S0958-9465(00)00071-8
  5. Bolomey, J. (1927), "Durcissement des mortiers et betons", Bull. Tech. Suisse Romande, Nos 16, 22 and 24.
  6. Boonlualoah, S. (2001), Mix design of Mae Moh fly ash concrete, Master Thesis of Civil Engineering Graduate School, Kasetsart University. Thailand.
  7. BS EN 206-1 (2000), Concrete - Part 1: Specification, performance, production and conformity, British Standard Institute.
  8. Chakraverty, S., Himani, Saini and Panigrahi, S.K. (2008), "Prediction of product parameters of fly ash cement bricks using two dimensional polynomials in the regression analysis", Comput. Concrete, 5(5), 449-459. https://doi.org/10.12989/cac.2008.5.5.449
  9. Chindaprasirt, P., Jaturapitakkul, C. and Sinsiri, T. (2005), "Effect of fineness on compressive strength and pore size of blended cement paste", Cement Concrete Res., 27, 425-428. https://doi.org/10.1016/j.cemconcomp.2004.07.003
  10. Feret, R. (1892), "Sur la compacite des mortiers hydrauliques", Annales des Ponts et Chaussees, Serie 7, 4, 5-164.
  11. Ganesh Babu, K. and Siva Nageswara Rao, G. (1996), "Efficiency of fly ash in concrete with age", Cement Concrete Res., 26(3), 465-474. https://doi.org/10.1016/S0008-8846(96)85034-4
  12. Hwang, C.L. and Hsieh, S.L. (2007), "The effect of fly ash/slag on the property of reactive powder mortar designed by using fuller's ideal curve and error function", Comput. Concrete, 4(6), 425-436. https://doi.org/10.12989/cac.2007.4.6.425
  13. Oner, A., Akyuz, S. and Yildiz, R. (2005), "An experimental study on strength development of concrete containing fly ash and optimum usage of fly ash in concrete", Cement Concrete Res., 35, 1165-1171. https://doi.org/10.1016/j.cemconres.2004.09.031
  14. Papadakis, V.G., Antiohos, S. and Tsimas, S. (2002), "Supplementary cementing materials in concrete, Part II: Fundamental estimation of efficiency factor", Cement Concrete Res., 32, 1533-1538. https://doi.org/10.1016/S0008-8846(02)00829-3
  15. Papadakis, V.G. and Tsimas, S. (2002), "Supplementary cementing materials in concrete, Part I: Efficiency and design", Cement Concrete Res., 32, 1525-1532. https://doi.org/10.1016/S0008-8846(02)00827-X
  16. Rajamane, N.P., Peter Annie, J. and Ambily, P.S. (2007), "Prediction of compressive strength of concrete with fly ash as sand replacement materials", Cement Concrete Compos., 29, 218-223. https://doi.org/10.1016/j.cemconcomp.2006.10.001
  17. Rukzon, S. and Chindaprasirt, P. (2008), "Mathematical model of strength and porosity of ternary blend Portland rice husk ash and fly ash cement mortar", Comput. Concrete, 5(1), 1-6. https://doi.org/10.12989/cac.2008.5.1.001
  18. Slanicka, S. (1990), "The influence of fly ash fineness on the strength of concrete", Cement Concrete Res., 21, 285-296.
  19. Smith, I.A. (1967), "The design of fly ash concrete", Proceedings Institution of Civil Engineers 36, London, April, Vol.36, 769-791.
  20. Songpiriyakij, S. (2002), Influence of particle size of fly ash on compressive strength of fly ash concrete, Ph.D. Dissertation, Faculty of Engineering, King Mongkut's University of Technology Thonburi, Thailand.
  21. Tang, C.W. (2010), "Hydration properties of cement paste containing high-volume mineral admixtures", Comput. Concrete, 7(1), 17-38. https://doi.org/10.12989/cac.2010.7.1.017
  22. Yamamoto, T., Kanazu, T., Nambu, M. and Tanosaki, T. (2006), "Pozzolanic reactivity of fly ash - API method and K-value", Fuel., 85, 2345-2351. https://doi.org/10.1016/j.fuel.2006.01.034

Cited by

  1. Permeability and abrasion resistance of concretes containing high volume fine fly ash and palm oil fuel ash vol.10, pp.4, 2012, https://doi.org/10.12989/cac.2012.10.4.349
  2. Improvement of recycled concrete aggregate using alkali-activated binder treatment vol.55, pp.1, 2011, https://doi.org/10.1617/s11527-021-01836-1