Determination of the effective permeability for fractured concrete model by using FEM
Email:
tbthao.tran@utc.edu.vn
Keywords:
fractured concrete, coarse aggregate, effective permeability
Abstract
The durability of a concrete structure containing intersecting fractures depends strongly on its water permeability. A good understanding of transport phenomena will be useful for predicting the service life and optimizing the material design. Therefore, the objective of this work is to investigate the influence of the fracture distribution law on the effective permeability for numerical fractured concrete model. To achieve this objective, two-dimensional concrete specimens with coarse aggregates are first generated. Then the system of fractures are randomly built with varied density ranges. Finaly, the hydraulic properties of the proposed models are determined by finite element method. Furthermore, the numerical results obtained are used to demonstrate that both the fracture density and its distribution law influence the effective permeability of fractured concrete modelReferences
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[2]. C. Hall, W.D. Hoff, Water Transport in Brick, Stone and Concrete, Spon Press, London, (2012).
[3]. L. Basheer, J. Kropp, D.J. Cleland. Assessment of the durability of concrete from its permeation properties: a review. Constr. Build. Mater., 15 (2001) 93–103. https://doi.org/10.1016/S0950-0618(00)00058-1
[4]. M. N. Vu, S. T. Nguyen, M. H. Vu, Modeling of fluid flow through fractured porous media by a single boundary integral equation, Eng. Anal. Boundary Elem., 59 (2015) 166-171. https://doi.org/10.1016/j.enganabound.2015.06.003
[5]. I. I. Bogdanov, V. V. Mourzenko, J. F. Thovert, Effective permeability of fractured porous media in steady state flow, Water Resour. Res., 39 (2003) 13/1-13/16. https://doi.org/10.1029/2001WR000756
[6]. M. Choinska, H. Al-Khazraji, N. Benkemoun, A. Khelidj, Influence of tensile cracking and of aggregate size on concrete permeability, MATEC Web of Conferences, 163 (2018) 02001. https://doi.org/10.1051/matecconf/201816302001
[7]. Y. Cao, J. E. Kilough, An Improved Boundary Element Method for Modeling Fluid Flow through Fractured Porous Medium, SPE Reservoir Simulation Conference, Montgomery, Texas, USA, February 2017, ISBN: 978-1-61399-483-2. https://doi.org/10.2118/182658-MS
[8]. T. Chen, Equivalent Permeability Distribution for Fractured Porous Rocks: Correlating Fracture Aperture and Length, Geofluids, 2020 (2020) 8834666. https://doi.org/10.1155/2020/8834666
[9]. A. Pouya, M. N. Vu, Numerical Modelling of Steady-State Flow in 2D Cracked Anisotropic Porous Media by Singular Integral Equations Method, Transp. Porous Med., 93 (2012) 475-493. 10.1007/s11242-012-9968-1
[10]. A. Lachihab, K. Sab, Aggregate composites: a contact based modeling, Comput. Mater., 33 (2005) 467-490. https://doi.org/10.1016/j.commatsci.2004.10.003
[11]. A. Lachihab, K. Sab, Does a representative volume element exist for fatigue life prediction? The case of aggregate composites, Int. J. Numer. Anal. Meth. Geomech., 32 (2008) 1005-1021. https://doi.org/10.1002/nag.655
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Received
26/09/2021
Revised
23/10/2021
Accepted
09/11/2021
Published
15/12/2021
Type
Research Article
How to Cite
Trần Thị Bích, T. (1200). Determination of the effective permeability for fractured concrete model by using FEM. Transport and Communications Science Journal, 72(9), 1047-1056. https://doi.org/10.47869/tcsj.72.9.4
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