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Production and investigation of mechanical properties and electrical resistivity of cement-matrix nanocomposites with graphene oxide and carbon nanotube reinforcements

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Abstract

In this study, two groups of the cement-matrix nanocomposites (CMNC) were produced. The first group was reinforced with either carbon nanotubes (CNT) or graphene oxide (GO), where the equivalent weight% of cement equaled 0.05, 0.1, and 0.15. The second group was reinforced with the hybrid CNT–GO, where the equivalent weight% of cement equaled 0.05 CNT–0.1 GO and 0.1 CNT–0.05 GO. Before producing nanocomposites, the distribution of the nanoreinforcement in water had been investigated using spectrophotometric analysis, scanning electron microscopy, and transmission electron microscopy. The physical and mechanical behaviors of different samples of the produced nanocomposites were evaluated by electrical resistivity and compressive strength tests. The effects of the types and the percentages of the nanoreinforcements on the electrical and mechanical properties of the produced nanocomposites were measured. The results showed that the electrical resistivity of the produced composites decreased with increasing the percentage of CNT, whereas the compressive strength of the cement paste initially increased and then decreased. Also, with increasing the percentage of GO, the compressive strength of the produced composites increased, while the electrical resistivity decreased. Moreover, in comparison with the composites reinforced with either CNT or GO, by using the hybrid reinforcement (CNT/GO), the compression strength increased, while the electrical resistivity decreased.

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This study was not funded.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Shiraz University, Shiraz, 71348-51154, Iran

    S. Najafishad, H. D. Manesh & S. M. Zebarjad

  2. Department of Civil and Environmental Engineering, Shiraz University, Shiraz, 71348-51154, Iran

    N. Hataf

  3. Department of Materials Engineering, Bu-Ali Sina University, Hamedan, 65178-38695, Iran

    Y. Mazaheri

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  1. S. Najafishad
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  2. H. D. Manesh
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  3. S. M. Zebarjad
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  4. N. Hataf
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  5. Y. Mazaheri
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Correspondence to Y. Mazaheri.

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Najafishad, S., Manesh, H.D., Zebarjad, S.M. et al. Production and investigation of mechanical properties and electrical resistivity of cement-matrix nanocomposites with graphene oxide and carbon nanotube reinforcements. Archiv.Civ.Mech.Eng 20, 57 (2020). https://doi.org/10.1007/s43452-020-00059-5

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  • DOI: https://doi.org/10.1007/s43452-020-00059-5

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