2003•Journal of Functional BiomaterialsOpen access

Resistivity-temperature behavior of carbon-fiber cement-matrix composites

Cao Zhen

Abstract

The resistivitytemperature behavior of carbonfiber cementmatrix composites was studied through experimental research. It was shown that the resistivity demonstrates a large increase and the positive temperature coefficient (PTC) effect was observed at an elevated temperature when the composites were heated above a critical temperature. However, the resistivity decreases and presents the negative temperature coefficient (NTC) effect below the critical temperature. This phenomenon was not observed for plain cementbased materials.

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Key concepts: Materials science, Electrical resistivity and conductivity, Composite material, Temperature coefficient, Cement, Fiber, Matrix (chemical analysis), Negative temperature