Hybrid micromechanical modelling and experiments on electrical conductivity of graphene reinforced porous and saturated cement composites

Fan, Yucheng; Ni, Zhengwei; Mu, Shengchang; Hang, Ziyan; Wang, Yu; Feng, Chun-Bo; Su, Yu; Weng, George J.

doi:10.1016/j.cemconcomp.2023.105148

Cited by 9 publications

(3 citation statements)

References 61 publications

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“…Therefore, GO can enhance the pressure-sensitive performance of GO/CCs [23]. Increasingly, GO is seen as promising for the development of cementitious materials for monitoring purposes [24,25].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, changes in water content can interfere with the sensing signal, which can have an impact on the application of the sensor. Water plays a significant role in the electrical conductivity and polarization effect of CCs [23,24]. In the case of pure cement specimens, the ionic conductivity of water causes polarization when measuring material resistance with a DC power supply.…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Moisture Content on the Electrical Properties of Graphene Oxide/Cementitious Composites

Liang,

Xia,

Yan

et al. 2024

Applied Sciences

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Due to its ability to improve mechanical properties when incorporated into cement, graphene oxide (GO) has received extensive attention from scholars. Graphene oxide is also a filler that improves the self-sensing properties of cement composites (CCs). However, existing studies have not focused sufficient attention on the electric conductivity of cement composites filled with graphene oxide (GO/CCs) and their mechanisms, especially polarization. This study examines the effects of water content and temperature on the electrical conductivity of GO/CCs. GO/CC polarization phenomena are analyzed to reveal the conductive mechanism. The results show that water has a significant influence on the electrical conductivity of GO/CCs. With increasing water loss, the electrical resistivity of GO/CCs increases by four orders of magnitude. For the same water content, a 0.1% GO concentration significantly decreases the resistivity of GO/CCs. Temperature can significantly enhance the current intensity of GO/CCs; furthermore, there is a quadratic relationship between current intensity and temperature. The conductive mechanism of GO/CCs is attributed to the interaction between ionic conductivity and electronic conductivity.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Effect of Moisture Content on the Electrical Properties of Graphene Oxide/Cementitious Composites

Liang,

Xia,

Yan

et al. 2024

Applied Sciences

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“…The developed model considering the effects of agglomeration and pores, accurately predicted the Young's Modulus and cracking loads, agreed with the experimental data. GNP was also used in studies of self-sensing [21,22], 3D printing [23,24], structural health evaluation [25,26], and modelling [27,28].…”

Section: Introductionmentioning

confidence: 99%

Investigating the Effect of GNP Addition on Self-healing of ECC through Mechanical and Nondestructive Testing

Göçügenci,

Keskin

2024

Period. Polytech. Civil Eng.

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Inclusion of nanomaterials is an effective method for enhancing the mechanical and durability characteristics of cement-based materials. Among various graphene-based nanomaterials, graphene nanoplatelets (GNPs) are cost-effective nanoparticles that possess graphene's key properties. Since limited information is available regarding their influence on the fresh, mechanical, non-destructive, and self-healing behavior of Engineered Cementitious Composites (ECC), this research focuses on GNP inclusion on these properties of ECC in a comprehensive way. In this research, the changes in material properties of ECC were monitored with several mechanical and nondestructive test methods. According to the results, GNP inclusion significantly enhanced flexural behavior and also promoted self-healing of ECC, with preloaded specimens exhibiting substantial or complete crack closure and similar performance to virgin specimens. Non-destructive tests and microstructural analyses also confirmed the promoting effects of GNP. A noticeable increase was observed in compressive strength when GNP was included. In conclusion, this study provides compelling evidence about the positive impact of GNP inclusion on improving the properties of ECC. The findings demonstrate the potential of GNPs to enhance the performance of cementitious materials and offer valuable insights for future research and practical applications.

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Experimental and theoretical analysis on the thermomechanical properties of functionally graded graphene nanoplatelet reinforced cement composites

Hang,

Feng,

Shen

et al. 2024

Cement and Concrete Composites

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Hybrid micromechanical modelling and experiments on electrical conductivity of graphene reinforced porous and saturated cement composites

Cited by 9 publications

References 61 publications

The Effect of Moisture Content on the Electrical Properties of Graphene Oxide/Cementitious Composites

The Effect of Moisture Content on the Electrical Properties of Graphene Oxide/Cementitious Composites

Investigating the Effect of GNP Addition on Self-healing of ECC through Mechanical and Nondestructive Testing

Experimental and theoretical analysis on the thermomechanical properties of functionally graded graphene nanoplatelet reinforced cement composites

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