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Sustained Loading Fracture and Strength of Concrete Modelled by Creep-Damage Interaction

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Abstract:

The phenomenon creep fracture is well-known for concrete. In the present paper, the Material Failure Process Analysis (MFPA2D) model for concrete in the failure process is coupled in series with the time-dependence of the concrete damage and deformation. Further, the progressive creep failure of concrete specimens under constant tensile loading was numerically simulated and the typical time-dependent deformations: the transient creep, the steady-state creep and the accelerating creep were also represented. The numerical simulations indicate that the macroscopic creep failure is induced by clusters of micro-fractures on a mesocopic scale. The above numerical results offer us some theoretical indications and instructions to further investigate the instability failure mechanisms of engineering concrete structures in civil and hydraulic engineering.

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Fracture and Damage Mechanics V View Preview

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Periodical:

Key Engineering Materials (Volumes 324-325)

Pages:

51-54

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.324-325.51

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Online since:

November 2006

Authors:

Tao Xu, Gao Lin, Chun An Tang, Zhi Qiang Hu

Keywords:

Creep, Damage, Failure Process, Material Failure Process Analysis MFPA, Numerical Simulation

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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