Water Migration Phenomenon Model in Cracked Concrete. I: Formulation
Publication: Journal of Engineering Mechanics
Volume 126, Issue 5
Abstract
A mathematical model for water migration in concrete that changes from a homogeneous to a nonhomogeneous material due to its loading history is developed in detail. In the proposed model, concrete is assumed to be composed of aggregate, cement paste, water, a crack band, and an interfacial crack between the aggregate and cement paste. The discontinuities for displacement and hydraulic gradient on cracks are considered on the microlevel. Then the governing equation for water migration in concrete as a homogeneous and a nonhomogeneous material is developed by coupling the mass conservation law and the force equilibrium. Therefore, it is possible to apply the developed model not only to cement-based material but also to porous permeable material like soil material and rock. However, the applicability of the developed model must be confirmed by comparing the experimental results.
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References
1.
Farahat, A. M. ( 1992). “Development of concrete models based on the micromechanics of granular material,” PhD thesis, Nagoya University, Nagoya, Japan.
2.
Oshita, H., and Tanabe, T. (2000). “Modeling of water migration phenomenon in concrete as homogeneous material.”J. Engrg. Mech., ASCE, 126(5), 551–553.
3.
Wu, Z. S., and Tanabe, T. (1990). “A hardening-softening model of concrete subjected to compressive loading.”J. Struct. Engrg., Tokyo, 36, 036B, 153–162.
Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 126 • Issue 5 • May 2000
Pages: 539 - 543
History
Received: May 16, 1997
Published online: May 1, 2000
Published in print: May 2000
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