A predicting model for thermal conductivity of high permeability-high strength concrete materials

- Journal title : Geomechanics and Engineering
- Volume 10, Issue 1, 2016, pp.49-57
- Publisher : Techno-Press
- DOI : 10.12989/gae.2016.10.1.049

Title & Authors

A predicting model for thermal conductivity of high permeability-high strength concrete materials

Tan, Yi-Zhong; Liu, Yuan-Xue; Wang, Pei-Yong; Zhang, Yu;

Tan, Yi-Zhong; Liu, Yuan-Xue; Wang, Pei-Yong; Zhang, Yu;

Abstract

The high permeability-high strength concrete belongs to the typical of porous materials. It is mainly used in underground engineering for cold area, it can act the role of heat preservation, also to be the bailing and buffer layer. In order to establish a suitable model to predict the thermal conductivity and directly applied for engineering, according to the structure characteristics, the thermal conductivity predicting model was built by resistance network model of parallel three-phase medium. For the selected geometric and physical cell model, the thermal conductivity forecast model can be set up with aggregate particle size and mixture ratio directly. Comparing with the experimental data and classic model, the prediction model could reflect the mixture ratio intuitively. When the experimental and calculating data are contrasted, the value of experiment is slightly higher than predicting, and the average relative error is about 6.6%. If the material can be used in underground engineering instead by the commonly insulation material, it can achieve the basic requirements to be the heat insulation material as well.

Keywords

high permeability;high strength concrete;porous materials;thermal resistance;heat conductivity;cold high altitudes;

Language

English

References

1.

Bozomolov, V.Z. and Chudnovsky, A.F. (1941), "Agrophysical", Trans., 20(3), 12-20.

2.

Chen, Y.F., Zhou, S., Hu, R. (2014), "Estimating effective thermal conductivity of unsaturated bentonites with consideration of coupled thermo-hydro-mechanical effects", Int. J. Heat Mass Transf., 72(18), 656-667.

3.

Florez, J.P.M., Mantelli, M.B.H. and Nuemberg, G.G.V. (2013), "Effective thermal conductivity of sintered porous media: Model and experimental validation", Int. J. Heat Mass Transf., 66(8), 868-878.

4.

Go, G.H., Lee, S.R., Kim, Y.S., Park, H.K. and Yoon, S. (2014), "A new thermal conductivity estimation model for weathered granite soils in Korea", Geomech. Eng., Int. J., 6(4), 359-376.

5.

Gong, W.P. (1999), "The theoretical analysis and experimental research of the effective thermal conductivity of porous materials", J. Shandong College of Electric Power, 12(2), 64-67.

6.

Guan, B.J. (2014), "Research on mix ratio of porous lightweight aggregate vegetation-growing concrete based on porosity", The World Building Mater., 12(3), 28-33.

7.

Kan, A., Han, H. and Tang, W. (2012), "Research on effective thermal conductivity for open-cell polyurethane foam using fractal theroy", Mater. Review, 26(2), 143-146.

8.

Kunni, D. and Smith, J.M. (1960), "Heat transfer characteristics of porous rocks", AIChE J., 6(1), 71-78.

9.

Kwon, J.S., Jang, C.H., Jung, H.Y. and Song, T.H. (2009), "Effective thermal conductivity of various filling materials for vacuum insulation panels", Int. J. Heat Mass Transf., 52(12), 5525-5532.

10.

Li, M.-W., Zhu, J.-C. and Yin, Z-.D. (2001), "Analysis of effective thermal conductivity of particle dispersive composites", J. Funct. Mater., 20(4), 397-398.

11.

Liu, X.Y., Zheng, C.Y., Zhang, X.P., Liu, J.J. and Huang, C.F. (2010), "Study on thermal conductivity of two-phase granular porous material", J. Eng. Thermophys., 31(3), 480-482.

12.

Luo, J., Niu, F.J., Lin, Z.J. and Lu, J.H. (2012), "Permafrost features around a representative thermokarst lake in Beiluhe on the Tibetan Plateau", J. Glaciol. Geocryol., 34(5), 1110-1118.

13.

Pabst, W. and Gregorova, E. (2014), "Conductivity of porous materials with spheroidal pores", J. Eur. Ceram. Soc., 34(4), 2757-2766.

14.

Park, S.I. and Hartley, J.G. (1999), "Predicting effective thermal conductivities of unbonded and bonded silica sands", J. Appl. Phys., 12(9), 5263-5269.

15.

Park, S.I. and James, G.H. (1992), "A model for prediction of the effective thermal conductivity of granular materials with liquid binder", KSME J., 12(6), 88-94.

16.

Wei, G.S., Liu, Y.S., Zhang, X.X., Yu, F. and Du, X.Z. (2011), "Thermal conductivities study on silica aerogel and its composite insulation materials", Int. J. Heat Mass Transf., 54(11-12), 2355-2366.

17.

Yovanovich, M.M., Scheider, G.E. and Tien, C.H. (1978), "Thermal resistance of hallow spheres subjected to arbitrary flux over their poles", Progress in Aeronautics and Astronautics, Thermophysics and Thermal Control, 65,120-134.

18.

Zheng, M.L., Wang, C.T. and Wang, B.G. (2007), "Drainage ability of porous concrete in road", J. Chang'an University (Natural Science Edition), 27(5), 6-10.

19.

Zhu, B.F. (1999), The Concrete Temperature Stress and Temperature Controlling, Chinese Power Press, Beijing, China.