Science China Technological Sciences

, Volume 54, Issue 12, pp 3382–3403 | Cite as

Investigation on thermophysical properties of reactive powder concrete

  • Yang Ju
  • HongBin Liu
  • JinHui Liu
  • KaiPei Tian
  • Song Wei
  • Song Hao
Article

Abstract

The thermophysical properties, such as thermal conductivity, thermal diffusivity, specific heat capacity and linear thermal expansion of reactive powder concrete (RPC) with different steel fiber volumetric fractions are investigated by means of high temperature tests. The thermophysical characteristics of RPC with different fiber volumes under different temperatures are analyzed and compared with those of the common high-strength concrete and high-performance concrete. The empirical relationships of thermophysical properties with temperature and fiber volume are identified. By the heat transfer and solid physics methods, the microscopic physical mechanism of heat transfer process and heat conduction properties of RPC are investigated, and the theoretical formulas of specific heat capacity and thermal expansion coefficient are derived, respectively. The effects of temperature and steel fibers on the specific heat capacity and the thermal expansion coefficient are quantitatively analyzed and the discriminant conditions are provided. It is shown that the experimental results are consistent with the theoretical prediction.

Keywords

reactive powder concrete (RPC) thermophysical properties high temperature fiber reinforcement heat conduction specific heat capacity thermal expansion coefficient 

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Copyright information

© Science China Press and Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Yang Ju
    • 1
  • HongBin Liu
    • 1
  • JinHui Liu
    • 1
  • KaiPei Tian
    • 1
  • Song Wei
    • 1
  • Song Hao
    • 1
  1. 1.State Key Laboratory of Coal Resources and Safe Mining, Beijing Key Laboratory of Fracture and Damage Mechanics of Rocks and ConcreteChina University of Mining and TechnologyBeijingChina

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