Abstract
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 (FCR) 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.
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