Electrode design, measuring method and data acquisition system of carbon fiber cement paste piezoresistive sensors

By B. Han, X. Guan, J. Ou. 2007

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Carbon nanotube (CNT) incorporated cementitious composites for functional construction materials: The state of the art (2019, methodology): “sistivity measured by four probe method is generally lower than that measured by the two probe method [118].”
Self-sensing piezoresistive cement composite loaded with carbon black particles (2017, background): “Subsequent studies report not just the use of CF ad ditives [10-31] but also of carbon”
Effects of CNT concentration level and water/cement ratio on the piezoresistivity of CNT/cement composites (2012, methodology): “The polarization effect can be eliminated from the measured electrical resistance signal by removing the linear trend term.(7,21) Therefore, the relatively simple two-electrode method is used to measure electrical resistance with a digital multimeter (Keithley 2100, Keithley Instruments Inc.”