Investigation of the Influence of Unburnt Carbon and Aggregate Type on Electrical Resistivity of Cement Mortar

Hemalatha, T.; Sangoju, Bhaskar; Vasudevan, Premalatha

doi:10.1007/s40030-022-00644-2

Cited by 3 publications

(1 citation statement)

References 18 publications

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“…but this can be improved by coating the conductive cementitious materials [38]. Some studies have also added industrial waste to cement-based materials to improve the conductivity of cement-based materials, Vasudevan [39] added copper slag to cement-based materials, effectively improving the conductivity of cement-based materials.…”

Section: Effect Of Conductive Materials On Conductivitymentioning

confidence: 99%

Review of Research on Conductive Cement-Based Material

Li,

Tier

2023

AEF

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The conductivity of cement-based materials is usually poor, and this material is not a common conductive material. However, with the rapid development of Internet of Things technology in recent years, the rise of smart cities has brought more and more opportunities and needs, and conductive cement-based materials have emerged. Conductive cement-based material is a new type of composite material. The conductive material is added to the cement-based material to reduce its resistance and enhance the conductive properties of the material. The material can not only be applied to the construction of smart cities, such as smart street lamps and smart roads but also can be widely used in buildings, public transportation, and other fields. In the study of conductive cement-based materials, the size and shape of conductive materials have a direct impact on the electrical conductivity of cement-based materials. This is because the dispersion of the conductive material has a significant effect on the conductivity, and the size and shape of the conductive material can determine its dispersion. Secondly, in the application environment of cement-based materials, factors such as humidity and cracks may affect electrical conductivity. Therefore, to ensure the stability and reliability of conductive cement-based materials, a large number of experimental studies are needed to optimize the dispersion and shape of conductive materials and to understand the performance of materials in different environments. The research of conductive cement-based materials is of great significance to the construction of smart cities in the future. This conductive material has great application prospects, which can not only improve the intelligent level of urban infrastructure but also bring more social and economic benefits.

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Section: Effect Of Conductive Materials On Conductivitymentioning

confidence: 99%

Review of Research on Conductive Cement-Based Material

Li,

Tier

2023

AEF

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A Review of Microwave Absorption and Reflection by Cement‐Based Materials, With Emphasis on Electromagnetic Interference Shielding and Admixture Effects

Chung

2024

Adv Funct Materials

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Cement‐based materials can be modified for microwave reflection/absorption. Admixtures (particles or short fibers) include conductive, dielectric, and magnetic ones, used solely or in combination. Synergism occurs with conductive and magnetic admixtures, due to the enabled eddy current. The conductive admixture promotes absorption and reflection, whether steel rebars are present or not. Regardless of the admixtures, rebars, or aggregates, absorption loss dominates over reflection loss. Steel microfiber is more effective than carbon fiber. Fly ash enhances the absorption slightly, due to the included iron oxide. Because of the skin effect, a small admixture unit size is preferred. Thus, carbon nanofiber is more effective than carbon fiber, if it is adequately dispersed. Fine particles (such as silica fume) as an additional admixture help the dispersion. Nanoscale admixtures tend to fill the pores, so their functional effectiveness is limited. Carbon black (nanoparticles) is less effective than carbon fiber, but it is inexpensive and the combined use of carbon fiber and carbon black is effective. The high cost of the nanofibers and the difficulty of their dispersion limit their practicality. Another approach involves porous admixtures or aggregates for reducing the impedance mismatch so that reflection is lessened and more radiation enters the cement‐based material.

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Dispersion effect of nano-structure pyrolytic carbon on mechanical, electrical, and microstructural characteristics of cement mortar composite

Karthikeyan,

Elavenil

2024

International Journal of Smart and Nano Materials

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Investigation of the Influence of Unburnt Carbon and Aggregate Type on Electrical Resistivity of Cement Mortar

Cited by 3 publications

References 18 publications

Review of Research on Conductive Cement-Based Material

Review of Research on Conductive Cement-Based Material

A Review of Microwave Absorption and Reflection by Cement‐Based Materials, With Emphasis on Electromagnetic Interference Shielding and Admixture Effects

Dispersion effect of nano-structure pyrolytic carbon on mechanical, electrical, and microstructural characteristics of cement mortar composite

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