The mechanical and electrical properties of an Engineered Cementitious Composite(ECC) while under tensile loading are presented. Direct tensile tests were conductedon dog-bone shaped ECC samples, with simultaneous mechanical and electricalmeasurements taken during the loading process. Regarding electrical propertymeasurements, these were recorded at 13 spot frequencies over the frequency range100Hz-1MHz. When presented in Nyquist format, the ECC displayed the typicalimpedance response comprising a spur at the low-frequency side of the curve and asemi-circular arc at the high-frequency side. It was evident that tensile straining of thedog-bone samples resulted in the entire impedance response being progressivelydisplaced to the right, indicating an overall increase in impedance, and in an increasein the prominence of the bulk arc. The increase in impedance can be attributed toincreased damage resulting from micro-cracking.
|Conference||4th International Conference on Strain-Hardening Cement-Based Composites 2017|
|Period||18/09/17 → 20/09/17|
- engineered cementitious composite
- damage sensing
- tensile test