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Electrical Impedance Response Model of Concrete in Setting Process

응결 과정 콘크리트의 전기 임피던스 응답 해석 모델

  • Shin, Sung Woo (Department of Safety Engineering, Pukyong National University) ;
  • Hwang, Garam (Engineering and Construction Group, Samsung C & T Corporation) ;
  • Lee, Chang Joon (Department of Architectural Engineering, Chungbuk National University)
  • Received : 2014.09.03
  • Accepted : 2014.10.10
  • Published : 2014.10.31

Abstract

Assessment of setting process of concrete is important as it provides useful information to schedule concreting work in construction site. Electrical impedance measurement method, which utilizes the change of electrical resistance of concrete, has been applied to assess setting process of cement-based materials. However, the applicability of the method has been demonstrated only for cement paste and mortar. The main purpose of this research is to develop the electrical impedance based setting process assessment for concrete. To this end, electrical impedance response model for concrete should be developed in advance since it is essential to estimate the electrical resistance of concrete from measured impedance response. The electrical resistance of concrete is a key parameter for the setting process assessment. In this study electrical impedance responses of the concrete in setting process are measured and analyzed. Thereby, an electrical impedance response model of the liquid state concrete is developed and schematically validated.

Acknowledgement

Supported by : 한국연구재단

References

  1. S. Mindess, J.F. Francis and D. Darwin, Concrete : 2nd Edition, Prentice Hall, NJ, USA, 2003.
  2. ASTM Standards, ASTM C403/C403M Standard Test Method for Time of Setting of Concrete Mixtures by Penetration Resistance, ASTM, USA.
  3. H. K. Lee and K.M. Lee, "Setting Assessment of High Strength Concrete using the Ultrasonic Pulse Velocity Monitoring", Journal of the Korea Concrete Institute, Vol. 14, No. 6, pp. 973-981, 2002. https://doi.org/10.4334/JKCI.2002.14.6.973
  4. J. F. Lamond and J.H. Pielert, Significance of Tests and Properties of Concrete and Concrete-Making Materials, ASTM International, USA, 2006.
  5. W. J. McCarter and P.N. Curran, "The Electrical Response Characteristics of Setting Cement Ppaste", Magazine of Concrete Research, Vol.36, Issue 126, pp. 42-49, 1984. https://doi.org/10.1680/macr.1984.36.126.42
  6. B.P. Hughes, A.K.O. Soleit and R.W. Brierley, "New Technique for Determining the Electrical Resistivity of Concrete", Magazine of Concrete Research, Vol.37, Issue 133, pp.243-248, 1985. https://doi.org/10.1680/macr.1985.37.133.243
  7. D.P. Bentz, "Three-dimensional Computer Simulation of Portland Cement Hydration and Microstructure Development", Journal of the American Ceramic Society, Vol.80, Issue 1, pp. 3-21, 1997. https://doi.org/10.1111/j.1151-2916.1997.tb02785.x
  8. B.J. Christensen, T. Coverdale, R.A. Olson, S.J. Ford, E.J. Garboczi, H.M. Jennings and T. O. Mason, "Impedance Spectroscopy of Hydrating Cement-based Materials: Measurement, Interpretation and Application", Journal of the American Ceramic Society, Vol.77, Issue 11, pp. 2789-2804, 1994. https://doi.org/10.1111/j.1151-2916.1994.tb04507.x
  9. K. Brantervik and G.A. Niklasson, "Circuit Models for Cement based Materials Obtained from Impedance Sepctroscopy", Cement and Concrete Research, Vol.21, Issue 4, pp. 496-508, 1991. https://doi.org/10.1016/0008-8846(91)90099-4
  10. G. Song, "Equivalent Circuit Model for AC Electrochemical Impedance Spectroscopy of Concrete", Cement and Concrete Research, Vol.30, Issue 11, pp. 1723-1730, 2000. https://doi.org/10.1016/S0008-8846(00)00400-2
  11. E. Barsoukov and J.R. Macdonald, Impedance Spectroscopy: Theory, Experiment and Applications, John Wiley & Sons, USA, 2005.
  12. P. Gu, Z. Xu, P. Xie and J.J. Beaudoin, "Application of A.C. Impedance Techniques in Studies of Porous Cemetitious Materials:(I)Iinfluence of Solid Phase and Pore Solution on High Frequency Resistance", Cement and Concrete Research, Vol.23, Issue 3, pp. 531-540, 1993. https://doi.org/10.1016/0008-8846(93)90003-R