›› 2007, Vol. 28 ›› Issue (S1): 137-143.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Mathematical modelling of thermo-hydro-mechanical behaviour for concrete under elevated temperature

SHEN Xin-pu1, SHEN Guo-xiao2, LIU Ji-hang1   

  1. 1. College of Architectural Engineering, Shenyang University of Technology, Shenyang 110023, China; 2. School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai 200030, China)
  • Received:2007-03-14 Online:2007-10-25 Published:2014-03-28

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Abstract: A hydro-thermo-mechanical model is presented for concrete at elevated temperature. Three phases of continuum were adopted in this model: gaseous mixture of water vapor and dry air, liquid water, and solid skeleton of concrete. Mass conservation equations, linear momentum conservation equation, and energy conservation equation are derived on the basis of the macroscopic Navier-Stokes equations for a general continuum, along with assumptions made for the purpose of simplification. Mathematical relationships between selected primary variables and secondary variables are given with existing data from references. Specifications of the constitutive relations are made for the kinetic variables and their conjugate forces. Consequently a set of governing partial differential equations are obtained.

Key words: concrete, moisture movement, elevated temperature, multi-phase continuum, coupling.

CLC Number: 

  • O342
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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