[ Caractérisation expérimentale d’un béton contenant des différentes inclusions par les méthodes électriques ]
Volume 30, Issue 1, July 2020, Pages 55–64
Mohamed Abdelhafid Bouhamla1 and Ahmed Beroual2
1 University Larbi Ben M’Hidi Oum El Bouaghi, Algeria
2 University Mentouri Constantine 1, Algeria
Original language: French
Copyright © 2020 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
This paper aimed at the experimental characterization of a two- phase composite material namely concrete containing different kind of inclusions by measuring the electric resistivity and the dielectric constant. The model of composite consists of cylindrical samples of concrete in which are introduced different types of cylindrical inclusions. Later are embedded in the centre of the host matrix. The measurements are achieved thanks to an impedance-meter. The effective dielectric constant and resistivity characteristics are investigated versus the concentration and the type of inclusions. The inclusions we consider are cavities (air), cavities filled with water. It’s shown that the effective dielectric constant of composite material increases with the water content while the effective resistivity decreases due to the fact that the dielectric constant of water is too higher than that of concrete and the resistivity of water is lower than that of concrete. While the dielectric constant of concrete decrease when increasing the concentration of cavities; the resistivity of heterostructure increases with the concentration of air. This technique can constitute a good tool to follow, for instance, the humidification or the drying of a given heterostructure.
Author Keywords: dielectric constant, resistivity, voids, water content, inclusions.
Volume 30, Issue 1, July 2020, Pages 55–64
Mohamed Abdelhafid Bouhamla1 and Ahmed Beroual2
1 University Larbi Ben M’Hidi Oum El Bouaghi, Algeria
2 University Mentouri Constantine 1, Algeria
Original language: French
Copyright © 2020 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
This paper aimed at the experimental characterization of a two- phase composite material namely concrete containing different kind of inclusions by measuring the electric resistivity and the dielectric constant. The model of composite consists of cylindrical samples of concrete in which are introduced different types of cylindrical inclusions. Later are embedded in the centre of the host matrix. The measurements are achieved thanks to an impedance-meter. The effective dielectric constant and resistivity characteristics are investigated versus the concentration and the type of inclusions. The inclusions we consider are cavities (air), cavities filled with water. It’s shown that the effective dielectric constant of composite material increases with the water content while the effective resistivity decreases due to the fact that the dielectric constant of water is too higher than that of concrete and the resistivity of water is lower than that of concrete. While the dielectric constant of concrete decrease when increasing the concentration of cavities; the resistivity of heterostructure increases with the concentration of air. This technique can constitute a good tool to follow, for instance, the humidification or the drying of a given heterostructure.
Author Keywords: dielectric constant, resistivity, voids, water content, inclusions.
Abstract: (french)
L’objectif de ce travail est de caractériser des matériaux de construction constitués de matrices homogènes à trois dimensions (matrice hôte) et d’inclusions diélectriques ou conductrices en utilisant une méthode non destructive. Cette méthode rallie deux méthodes: l’une diélectrique et l’autre électrique.Il s’agit particulièrement d’évaluer la présence d’inclusions, leurs concentrations et leur nature dans une structure donnée.Les échantillons considérés sont constitués de béton en forme de cylindre, contenant des inclusions d’air, d’eau.Il ressort de cette étude expérimentale sur un échantillon de béton avec différents types d’inclusion (eau, air) que les caractéristiques donnant la constante diélectrique et la résistivité diélectrique effectives des hétérostructures constituent des outils de grande importance pour différencier le type d’inclusions connaissant la matrice mère. En effet, les caractéristiques de la constante diélectrique et de la résistivité électrique évoluent en fonction de la concentration volumique des inclusions et de leur nature. Ainsi, Il est possible, par exemple, grâce à ces caractéristiques, de suivre l’humidification ou le séchage du béton. Ce résultat peut être appliqué à tout autre type de matériaux (argile …). Il est également possible de distinguer entre les différents types d’inclusions (eau, acier…).Notons également que pour toutes les structures étudiées, il existe une corrélation entre la constante diélectrique et la résistivité effective.
Author Keywords: permittivité, résistivité, air, eau contenue, inclusions.
How to Cite this Article
Mohamed Abdelhafid Bouhamla and Ahmed Beroual, “Experimental characterisation of concrete containing different inclusions by electrical methods,” International Journal of Innovation and Applied Studies, vol. 30, no. 1, pp. 55–64, July 2020.
