Both electrical properties and piezoresistive behavior of the cement-based composites containing copper-coated steel fiber (0.5 vol. %) and graphite powder (0~25 % by mass of the binder) were investigated. This type of material can be used as sensors to be embedded into pavement for traffic weighing or into bridges for strain sensing. The change in resistivity of this material with stress under cyclic uniaxial loading was tested. No matter what the content of the graphite powder that was added in the composite, the corresponding relationship between stress and resistance variation can be observed. The results showed that, when the content of graphite powder was 15%, the sensitivity to stress was higher relative to the others contents of graphite powder while its resistivity of electrically was 1474.874 Ω·cm, and the compressive strength was 40.3MPa at 28 days.
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