| Title |
Effects of Multi-Walled Carbon Nanotubes and Micro Steel Fibers on Properties of Conductive Mortar |
| Authors |
최범균(Choi, Beom Gyun );박종건(Park, Jong Gun);서동주(Seo, Dong Ju);전형민(Jun, Hyung Min);윤창호(Yun, Chang-Ho);허광희(Heo, Gwang Hee) |
| DOI |
https://doi.org/10.12652/Ksce.2025.45.1.0007 |
| Keywords |
다중벽 탄소나노튜브; 마이크로 강섬유; 전도성 모르타르; 발열 성능; 휨강도 |
| Abstract |
For snow removal/deicing on the pavements in winter, when a voltage is applied to the mortar through the embedded electrodes, heat is generated due to the resistance caused by the current flow. The generated heat can be effectively used to melt snow/ice accumulated on the pavements. This paper investigated the properties of conductive mortar containing multi-walled carbon nanotubes (MWCNT) and micro steel fibers (MSF). The synergistic effects of MWCNT and MSF on the microstructure, heating performance, electrical and flexural strength properties of conductive mortar were examined. The results demonstrated a clear synergistic effect between MWCNT and MSF. As the mixing concentration of MWCNT and the applied voltage were increased, the heating performance improved significantly, and the electrical resistance decreased substantially. Scanning electron microscope (SEM) images confirmed that MWCNT were evenly dispersed within the cement matrix together with MSF, forming conductive paths and acting as bridges. However, the aggregation of some MWCNT was found to diminish both heating performance and flexural strength in the conductive mortar. |