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.

中文翻译：

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氧化石墨烯和碳纳米管增强剂的水泥基纳米复合材料的力学性能和电阻率的生产和研究

在这项研究中，产生了两组水泥基纳米复合材料（CMNC）。第一组用碳纳米管（CNT）或氧化石墨烯（GO）增强，其中水泥的当量％等于0.05、0.1和0.15。第二组用混合碳纳米管-GO增强，其中水泥的当量％等于0.05 CNT-0.1 GO和0.1 CNT-0.05 GO。在生产纳米复合材料之前，已经使用分光光度分析，扫描电子显微镜和透射电子显微镜研究了纳米增强材料在水中的分布。通过电阻率和抗压强度测试评估所生产的纳米复合材料的不同样品的物理和机械行为。测量了纳米增强材料的类型和百分比对所生产的纳米复合材料的电气和机械性能的影响。结果表明，随着CNT含量的增加，复合材料的电阻率降低，而水泥浆的抗压强度先升高后降低。而且，随着GO百分数的增加，制得的复合材料的抗压强度增加，而电阻率降低。而且，与用CNT或GO增强的复合材料相比，通过使用杂化增强材料（CNT / GO），压缩强度增加，而电阻率降低。结果表明，随着CNT含量的增加，复合材料的电阻率降低，而水泥浆的抗压强度先升高后降低。而且，随着GO百分数的增加，制得的复合材料的抗压强度增加，而电阻率降低。而且，与用CNT或GO增强的复合材料相比，通过使用杂化增强（CNT / GO），压缩强度增加，而电阻率降低。结果表明，随着CNT含量的增加，复合材料的电阻率降低，而水泥浆的抗压强度先升高后降低。而且，随着GO百分数的增加，制得的复合材料的抗压强度增加，而电阻率降低。而且，与用CNT或GO增强的复合材料相比，通过使用杂化增强（CNT / GO），压缩强度增加，而电阻率降低。而电阻率下降。而且，与用CNT或GO增强的复合材料相比，通过使用杂化增强材料（CNT / GO），压缩强度增加，而电阻率降低。而电阻率下降。而且，与用CNT或GO增强的复合材料相比，通过使用杂化增强材料（CNT / GO），压缩强度增加，而电阻率降低。