Two-dimension MXene was applied in cement to fabricate MXene cement-based sensor used in structural health monitoring. The effect of MXene content on the piezoresistive performance of MXene cement-based composites (MCBC) was investigated. The fractional change in resistivity () under different loading rate, water content and failure load were also measured. Microanalysis results proves that MXene can construct electrical network in cement composites. The results demonstrated that the stress sensitivity has a maximum at 1.0 wt% MXene content. When loading rate increases, the sensitivities of composites decrease linearly, while the water content increases, the decrease of sensitivities is not completely linear. The relationship between compressive stress and fractional change in resistivity conforms to quadratic polynomial under failure load.

中文翻译：

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二维 MXene 水泥基复合材料在不同载荷条件和含水量下的压阻性能

将二维 MXene 应用于水泥中，制造用于结构健康监测的 MXene 水泥基传感器。研究了 MXene 含量对 MXene 水泥基复合材料（MCBC）压阻性能的影响。还测量了不同加载速率、含水量和破坏载荷下电阻率的分数变化()。微观分析结果证明MXene可以在水泥复合材料中构建电网络。结果表明，应力敏感性在 1.0 wt% MXene 含量时达到最大值。当加载速率增加时，复合材料的灵敏度呈线性下降，而含水量增加时，灵敏度的下降并不完全线性。破坏载荷下压应力与电阻率变化率之间的关系符合二次多项式。