Study of the Freeze-Thaw Damage Constitutive Model of Concrete Based on WEIBULL’s Strength Theory

Abstract:

Statistical methods was combined with micromechanics. Based on the parallel bar system, the damage law of the concrete materials subjected to uniaxial compressive stress was simulated. Furthermore, the meso-statistical damage constitutive of concrete materials was studied base on the Weibull’s statistical theory of the strength of materials. While according to constitutive uniaxial compression test of concrete material after freezing and thawing, the parameters m and ε₀ of the model were fitted. Then the freeze-thaw damage constitutive equation of concrete was proposed base on meso-statistical damage mechanics. Finally, the experimental results was compared with theoretical models, and the rationality of the theoretical model was verified.

• Periodical: Applied Mechanics and Materials (Volumes 584-586)
• Pages: 1322-1327
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.584-586.1322
• Online since: July 2014
• Authors: Xiao Guan, Di Tao Niu, Jia Bin Wang, Yan Wang
• Keywords: Damage Constitutive Model, Freeze-Thaw Cycles, Microscopic Statistical Mechanics, Parallel Bar System, Weibull’s Strength Theory

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