Electrical resistance change in compact tension specimens of carbon fiber cement composites

Reza, Farhad; Yamamuro, Jerry A.; Batson, Gordon B.

doi:10.1016/j.cemconcomp.2003.06.002

Cited by 55 publications

(19 citation statements)

References 10 publications

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“…Reza et al investigated the sensing behavior of concrete with carbon fiber under compact tension. They observed that this concrete can be used to provide direct insight on the development and the mechanisms of the fracture process and to provide an estimate of the length of a propagating crack (Reza et al, 2004). Wang et al tested four-point bending beams fabricated with the carbon fiber concrete and evaluated the relationship between electrical property and fatigue life under cyclic flexural loading.…”

Section: Intrinsic Self-sensing Concrete and Structuresmentioning

confidence: 99%

Smart concretes and structures: A review

Han

Wang

Dong

et al. 2015

Journal of Intelligent Material Systems and Structures

214

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Smart concretes and structures are intelligent systems that have properties different from normal concrete, such as selfsensing and self-healing properties, or have the ability to react upon an external stimulus, such as stress and temperature. The ''smartness'' of concrete and structures is achieved through material composition design, special processing, introduction of other functional components, or modification of the microstructure. They are designed to meet specific requirements through tailored properties for improving serviceability, safety, reliability, longevity, and durability of the infrastructures and reducing the life-cycle costs of the infrastructures. This article reviews the recent researches of various smart concretes and structures, with attentions to their principles, fabrication, and properties. Future challenges in the development and applications of smart concretes and structures are also discussed.

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Section: Intrinsic Self-sensing Concrete and Structuresmentioning

confidence: 99%

Smart concretes and structures: A review

Han

Wang

Dong

et al. 2015

Journal of Intelligent Material Systems and Structures

214

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“…This could open up a diverse range of nonstructural applications; e.g., conductive fiber cement matrices could find general application in electrical grounding, static charge dissipation, electrical resistance heating, and cathodic protection systems in reinforced concrete structures [1][2][3] ; by utilizing its piezoresistive properties, these materials also possess self-monitoring capabilities with respect to deformation and damage under static and dynamic loading. [4][5][6][7][8] Work on conductive fiber cement-based systems has, in the main, utilized the d.c. or low-frequency electrical conductivity/ resistivity of the material. Studies on the a.c. electrical properties of conductive fiber cements are more limited [9][10][11] and tend to be confined to cement pastes with data normally presented in the form of a complex impedance (Nyquist) plot which allows an equivalent electrical circuit to be developed to mimic the observed response in terms of combinations of resistors and capacitors.…”

Section: Introductionmentioning

confidence: 99%

Complex Impedance and Dielectric Dispersion in Carbon Fiber Reinforced Cement Matrices

McCarter

Starrs

Chrisp

et al. 2009

Journal of the American Ceramic Society

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The electrical response of carbon fiber reinforced cement mortar over the frequency range 1 Hz–10MHz has been presented. The low frequency conductivity is shown to be directly influenced by increasing fiber dosage, with conductivity percolation occurring at dosages in the range 0.35%–1.0% (by volume). When viewed across the entire frequency spectrum, the conductivity and dielectric constant frequency dispersions reveal two regions of relaxation. The definition of these regions becomes more pronounced as the fiber dosage is increased. It is proposed that the low frequency relaxation process (1 Hz–1 kHz) is related to the enhanced charge transfer characteristics at the electrode–material interface produced by the presence of the carbon fibers in the vicinity of the electrodes. The high frequency relaxation process (5 kHz–10 MHz) results from a Maxwell–Wagner effect produced by the presence of highly conducting inclusions (the carbon fibers) in the low conductivity mortar matrix.

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“…bridges, pressure vessels) [7]. Other areas where CFRC could find practical application include: electrically conductive cementitious overlays for heating applications [8,9]; as an effective, durable low-resistance grounding-system [10] for earthing electrical installations or preventing static electricity build-up; as an overlay in cathodic protection systems providing a more uniform current distribution, or in structures where electromagnetic shielding or screening is required [11].…”

Section: Introductionmentioning

confidence: 99%