Modeling the influence of the interfacial zone on the DC electrical conductivity of mortar |
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| Affiliation: | 1. Department of Nanomedicine, Houston Methodist Research Institute, 6670 Bertner Ave., Houston, TX 77030, USA;2. Graduate School of Biomedical Sciences, University of Texas Health Science Center, 6767 Bertner Ave., Houston, TX 77030, USA;3. Escuela de Medicina y Ciencias de la Salud, Tecnológico de Monterrey, 3000 Ave. Morones Prieto Esquina Con Dr. Cantú, Monterrey, Nuevo León, México;1. CNRS & École polytechnique, Centre de mathématiques appliquées, route de Saclay, 91128 Palaiseau, France;2. Université Paris-Diderot, Institut de mathématiques de Jussieu, Paris Rive Gauche, 75205 Paris cedex 13, France;3. Université Pierre-et-Marie-Curie & École normale supérieure, Département de mathématiques et applications, 11, rue Pierre-et-Marie-Curie, 75231 Paris cedex 05, France;1. College of Civil Engineering and Architecture, Zhejiang University, 310058, Hangzhou, China;2. Center for Balance Architecture, Zhejiang University, 310028, Hangzhou, China;3. The Architectural Design & Research Institute of Zhejiang University Co., Ltd, 310063, Hangzhou, China;4. ZJU-ZCCC Institute of Collaborative Innovation, 310058, Hangzhou, China.;5. Department of Civil Engineering, Tsinghua University, 100084, Beijing, China;6. Civil Engineering Department, Faculty of Engineering, Sana’a University, Sana’a, Yemen.;1. State Key Laboratory of Hydraulic Engineering Simulation and Safety and Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Tianjin University, 135 Yaguan Road, Jinnan District, Tianjin 300354, China;2. School of Civil Engineering, Tianjin University, Tianjin 300072, China;3. College of Engineering, Ocean University of China, Qingdao 266100, Shandong, China |
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| Abstract: | The interfacial zone separating cement paste and aggregate in mortar and concrete is believed to influence many of the properties of these composites. The available experimental evidence, obtained on artificial geometries, indicates that the DC electrical conductivity of the interfacial zone, because of its higher porosity, may be considerably larger than that of the bulk cement paste matrix. This paper presents the theoretical framework for quantitatively understanding the influence of the interfacial zone on the overall electrical conductivity of mortar, based on realistic random aggregate geometries. This understanding is also used, via an electrical analogy with Darcy's law, to make predictions about the effect of the interfacial zone on fluid permeability. The results obtained for mortar should also pertain to concrete. |
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