| 주 저자 | Soonho Kim, Rongzhen Piao, Seung Kyun Lee, Taekgeun Oh, Booki Chun, Jae-Weon Jeong, Ha-Jin Lee, Doo-Yeol Yoo |
|---|
| 공동 저자 | - |
|---|
| 소속 | - |
|---|
| Abstract | This study investigates the effects of the water-to-cement (w/c) ratio and carbon nanotube (CNT) dosage on the thermoelectric and mechanical properties of cement-based composites. Four different types of w/c ratio including 0.2, 0.3, 0.4, and 0.5 were employed with three different dosages of CNT, including 0.15, 0.3, and 0.5?vol% (0.39?wt%). Additionally, pristine CNT and nitrogen-doped CNT were adopted to fabricate p- and n-type thermoelectric cement-based composites, respectively. The Seebeck coefficient, electrical conductivity, compressive strength, and isothermal calorimetry were then measured and evaluated. The test results indicate that at a w/c ratio of 0.5, the use of CNTs enhances the compressive strength of cement paste by up to 65.9?%. The isothermal calorimetry measurement also confirmed the acceleration of the hydration reaction by the CNTs added to the cement paste. A w/c ratio of 0.3 with CNT dosages of 0.3 and 0.5?vol% was also found to be the most effective in improving the Seebeck coefficient. Additionally, the highest Seebeck coefficients for the p- and n-type thermoelectric cement-based composites are 743.0 and ?428.3 ?V/K, respectively. Considering that a CNT dosage of 0.3?vol% is most effective in enhancing the electrical conductivity, the best cement-based composites in terms of thermoelectric properties comprise a w/c ratio of 0.3 and a CNT dosage of 0.3?vol%. |
|---|
| Keyword | Multi-functional cement composites, Thermoelectric property, Thermal energy harvesting, Carbon nanotube, Seebeck coefficient |
|---|
| 페이지 | pp. 1~18 |
|---|
| 논문 파일 |
없음
|
|---|
| 게재일시 |
2024-12
|
|---|
| DOI | - |
|---|
| 학회/저널명 | Case Studies in Construction Materials Vol.21 |
|---|
| 년도 | 2024 |
|---|
| 추가 문구 | e03861, https://doi.org/10.1016/j.cscm.2024.e03861 |
|---|
| 등록 일시 | 2025-06-18 15:48:57 |
|---|
