Computers and Concrete

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Numerical analysis of the thermal behaviors of cellular concrete

  • She, Wei (Jiangsu Key laboratory for Construction Materials, Southeast University) ;
  • Zhao, Guotang (China Railway Corporation) ;
  • Yang, Guotao (China Railway Corporation) ;
  • Jiang, Jinyang (Jiangsu Key laboratory for Construction Materials, Southeast University) ;
  • Cao, Xiaoyu (Jiangsu Key laboratory for Construction Materials, Southeast University) ;
  • Du, Yi (Jiangsu Key laboratory for Construction Materials, Southeast University)
  • Received : 2015.03.23
  • Accepted : 2016.05.17
  • Published : 2016.09.25
⟨ Previous Next ⟩

Abstract

In this study, both two- and three-dimensional (2D and 3D) finite-volume-based models were developed to analyze the heat transfer mechanisms through the porous structures of cellular concretes under steady-state heat transfer conditions and to investigate the differences between the 2D and 3D modeling results. The 2D and 3D reconstructed pore networks were generated from the microstructural information measured by 3D images captured by X-ray computerized tomography (X-CT). The computed effective thermal conductivities based on the 2D and 3D calculations performed on the reconstructed porous structures were found to be nearly identical to those evaluated from the 2D cross-sectional images and the 3D X-CT images, respectively. In addition, the 3D computed effective thermal conductivity was found to agree better with the measured values, in comparison with the 2D reconstruction and real cross-sectional images. Finally, the thermal conductivities computed for different reconstructed porous 3D structures of cellular concretes were compared with those obtained from 2D computations performed on 2D reconstructed structures. This comparison revealed the differences between 2D and 3D image-based modeling. A correlation was thus derived between the results of the 3D and 2D models.

Keywords

Acknowledgement

Supported by : National Natural Science Fund of China, China Railway Engineering Corporation

References

  1. Ahern, A., Verbist, G., Weaire, D., Phelan, R. and Fleurent, H. (2005), "The conductivity of foams: a generalisation of the electrical to the thermal case", Colloid Surface A: Physicochem. Eng. Aspects, 263, 275-279. https://doi.org/10.1016/j.colsurfa.2005.01.026
  2. Aldridge, D. (2000), "Foamed concrete for highway bridge works, Seminar notes on foamed concrete:properties, applications and potential", University of Dundee, Scotland, 33-41.
  3. Bhattacharya, A., Calmidi, V. and Mahajan, R. (2002), "Thermophysical properties of high porosity metal foams", Int. J. Heat Mass Transfer, 45(5), 1017-1031. https://doi.org/10.1016/S0017-9310(01)00220-4
  4. Bouvard, D., Chaix, J.M., Dendievel, R., Fazekas, A., Letang, J.M., Peix, G. and Quenard, D. (2007), "Characterization and simulation of microstructure and properties of EPS lightweight concrete", Cement and Concrete Res., 37(12), 1666-1673. https://doi.org/10.1016/j.cemconres.2007.08.028
  5. Collishaw, P.G. and Evans, J.R.G. (1994), "An assessment of expressions for the apparent thermal conductivity of cellular materials", J. Mater. Sci., 29(9), 2261-2273. https://doi.org/10.1007/BF00363413
  6. EN 12664 (2001), Thermal performance of building materials and products -determination of thermal resistance by means of guarded hot plate and heat flow meter methods-dry and moist products of medium and low thermal resistance, European Committee for Standardization.
  7. EN 12939 (2000), Thermal performance of building materials and products -determination of thermal resistance by means of guarded hot plate and heat flow meter methods -thick products of high and medium thermal resistance, European Committee for Standardization.
  8. Esmaily, H. and Nuranian, H. (2012), "Non-autoclaved high strength cellular concrete from alkali activated slag", Constr. Build. Mater., 26(1), 200-206. https://doi.org/10.1016/j.conbuildmat.2011.06.010
  9. Fu, X. and Chung, D. (1999), "Effect of admixtures on thermal and thermomechanical behavior of cement paste", ACI Mater. J., 96(4), 455-61.
  10. Gibson, L.J. and Ashby, M.F. (1997), Cellular Solids, (second ed.), Cambridge University Press, Cambridge, UK.
  11. Glicksmann, L.R. and Schuetz, M.A. (1994), Low density cellular plastics, Chapman & Hall, London, UK.
  12. Hashin, Z. and Shtrikman, S. (1962), "A variational approach to the theory of the effective magnetic permeability of multiphase materials", J. Appl. Phys., 33(10), 3125-3131. https://doi.org/10.1063/1.1728579
  13. ISO 8990 (1994), Thermal insulation-determination of steady-state thermal transmission propertiescalibrated and guarded hot box, International Standard Organization.
  14. Jones, M.R. and McCarthy, A. (2005), "Behavior and assessment of foamed concrete for fill and highway applications", Proceedings of an International Conference on Uses of Foamed Concrete Global Construction: Ultimate Concrete Opportunities, Dundee, Scotland, UK.
  15. Kearsley, E.P. and Mostert, H.F. (2005), "Opportunities for expanding the use of foamed concrete in the construction industry", Proceedings of an International Conference on Uses of Foamed Concrete Global Construction: Ultimate Concrete Opportunities, Dundee, Scotland, UK.
  16. Kuhn, J., Ebert, H., Arduini-Schuster, M.C., Buttner, D. and Fricke, J. (1992), "Thermal transport in polystyrene and polyurethane foam insulations", Int. J. Heat Mass Transfer, 35(7), 1795-1801. https://doi.org/10.1016/0017-9310(92)90150-Q
  17. Landauer, R. (1952), "The electrical resistance of binary metallic mixtures", J. Appl. Phys., 23(7), 779-784. https://doi.org/10.1063/1.1702301
  18. Litovsky, E., Shapiro, M. and Shavit, A. (1996), "Gas pressure and temperature dependences of thermal conductivity of porous ceramic materials: Part 2, refractories and ceramics with porosity exceeding 30%", J. Am. Ceramic Soc., 79(5), 1366-1376. https://doi.org/10.1111/j.1151-2916.1996.tb08598.x
  19. Lu, T.J. and Chen, C. (1999), "Thermal transport and fire retardance properties of cellular aluminium alloys", Acta Mater., 47(5), 1469-1485. https://doi.org/10.1016/S1359-6454(99)00037-3
  20. Lv, X., Cao, M., Li, Y., Li, X., Li, Q., Tang, R., Wang, Q. and Duan, Y. (2015), "A new absorbing foam concrete: preparation and microwave absorbing properties", Adv. Concrete Constr., 3(2),103-111. https://doi.org/10.12989/acc.2015.3.2.103
  21. Narayanan, N. and Ramamurthy, K. (2000) "Structure and properties of aerated concrete: a review", Cement Concrete Compos., 22(5), 321-329 https://doi.org/10.1016/S0958-9465(00)00016-0
  22. Nooraini, M.Z., Ismail, A.R. and Ahmad Mujahid, A.Z. (2009), "Foamed concrete: potential application in thermal insulation, Malaysian Technical Universities Conference on Engineering and Technology (MUCEET), Kuantan, Pahang, Malaysian, June.
  23. Othuman Mydin, M.A. and Wang, Y.C. (2012), "Thermal and mechanical properties of lightweight foamed concrete at elevated temperatures", Mag. Concrete Res., 64(3), 213-224. https://doi.org/10.1680/macr.10.00162
  24. Placido, E., Arduini-Schuster, M.C. and Kuhn, J. (2005), "Thermal properties predictive model for insulating foams", Infrared Phys. Techn., 46(3), 219-231. https://doi.org/10.1016/j.infrared.2004.04.001
  25. Russell, H.W. (1935), "Principles of heat flow in porous insulators", J. Am. Ceram. Soc., 18(1-12), 1-5. https://doi.org/10.1111/j.1151-2916.1935.tb19340.x
  26. Scheffler, M. and Paolo, C. (2005), Cellular ceramics structure, manufacturing, properties and applications, WILEY-VCH, Weinheim, Germany.
  27. She, W., Chen, Y., Zhang, Y. and Jones, M.R. (2013), "Characterization and simulation of microstructure and thermal properties of foamed concrete", Constr. Build. Mater., 47, 1278-1291. https://doi.org/10.1016/j.conbuildmat.2013.06.027
  28. Skochdopole, R.E. (1961), "The thermal conductivity of foam plastics", Eng. Progress, 57.
  29. Tanacan, L., Ersoy, H.Y. and Arpacioglu, U. (2009), "Effect of high temperature and cooling conditions on aerated concrete properties", Constr. Build. Mater., 23(3), 1240-1248. https://doi.org/10.1016/j.conbuildmat.2008.08.007
  30. Wang, X.S., Wu, B.S. and Wang, Q.Y. (2005), "Online SEM investigation of microcrack characteristics of concretes at various temperatures", Cement Concrete Res., 35(7), 1385-1390. https://doi.org/10.1016/j.cemconres.2004.07.015
  31. Wiener, O. (1904), "Lamellare doppelbrechung", Phys. Zeitschrift, 5(12), 332-338.
  32. Xia, Y., Yan, Y. and Hu, Z. (2013), "Utilization of circulating fluidized bed fly ash in preparingnonautoclaved aerated concrete production", Constr. Build. Mater., 47, 1461-1467. https://doi.org/10.1016/j.conbuildmat.2013.06.033
  33. Yang, L., Yan, Y. and Hu, Z. (2013), "Utilization of phosphogypsum for the preparation of non-autoclaved aerated concrete", Constr. Build. Mater., 44, 600-606. https://doi.org/10.1016/j.conbuildmat.2013.03.070
  34. Yesilata, B. and Turgut, P. (2007), "A simple dynamic measurement technique for comparing thermal insulation performances of anisotropic building materials", Ener. Build., 39(9), 1027-34. https://doi.org/10.1016/j.enbuild.2006.11.007
  35. Zarr, R.R. (2001), "History of testing heat insulators at the national institute of standards and technology", ASHRAE Transact., 107(2), 1-11.

Cited by

  1. Effect of thermal-induced microcracks on the failure mechanism of rock specimens vol.22, pp.1, 2018, https://doi.org/10.12989/cac.2018.22.1.093
  2. Fundamental Properties and Thermal Transferability of Masonry Built by Autoclaved Aerated Concrete Self-Insulation Blocks vol.13, pp.7, 2016, https://doi.org/10.3390/ma13071680
  3. Mechanical Behaviour of Cement-Bound Gravels by Experiment-Based 3D Multi-Scale Modelling: Application to Non-Hazardous Waste Incineration Bottom Ashes Aggregates for Use in Road Engineering vol.54, pp.None, 2016, https://doi.org/10.4028/www.scientific.net/jera.54.71
  4. Thermal conductivity evolution of early-age concrete under variable curing temperature: Effect mechanism and prediction model vol.319, pp.None, 2016, https://doi.org/10.1016/j.conbuildmat.2021.126078