Enhanced Detection Systems of Filling Rates Using Carbon Nanotube Cement Grout
Abstract
:1. Introduction
2. Experimental Procedures
2.1. Characteristics of Multi-Walled Carbon Nanotubes
2.2. Fabrication of Specimens
2.3. Test Methods
3. Experimental Results
3.1. Thermal Characteristics of The MWCNT Cement Grout
3.2. Electrical Characteristics of The MWCNT Cement Grout
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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MWCNTs | Notes | |
---|---|---|
Structure | Diameter: 5–100 nm Length: 100 nm–1 cm | - |
Modulus of Elasticity | 0.3–0.95 TPa | 0.1–0.14 TPa (Cement mortar) |
Tensile Strength | 11–63 GPa | 0.002–0.01 GPa (Cement mortar) |
Electrical Conductivity | ~6000 S/cm | 5810 S/cm (Copper) |
Heat Conductivity | Max. 3000 W/(m·k) | 3320 W/(m·k) (Diamond) |
Group | Specimen Name | CNT Type | CNT Content (wt %) | Filling Rate (%) |
---|---|---|---|---|
Group #1 | OPC-100 | - | - | 100 |
OPC-50 | 50 | |||
Group #2 | MW-0.1-100 | MWCNT | 0.1 | 100 |
MW-0.1-75 | 75 | |||
MW-0.1-50 | 50 | |||
MW-0.1-25 | 25 | |||
MW-1.0-100 | 1.0 | 100 | ||
MW-1.0-75 | 75 | |||
MW-1.0-50 | 50 | |||
MW-1.0-25 | 25 |
Technical Data | Testo 882 | |
---|---|---|
Infrared image output | Detector type | 320 × 240 pixel |
Thermal sensitivity | 0.05 °C at + 30 °C | |
Image refresh rate | 9 Hz or 33 Hz | |
Measurement | Temperature range | −20–350 °C |
Accuracy | ±2 °C, ±2% of the measured value |
Group | Specimen Name | Filling Rate (%) | Temperature Change (°C) | Standard Deviation | Specimen/100%-Filled Specimen |
---|---|---|---|---|---|
Group #1 | OPC-100 | 100 | 0.65 | 0.002 | - |
OPC-50 | 50 | 0.85 | 0.003 | 1.31 | |
Group #2 | MW-0.1-100 | 100 | 0.65 | 0.002 | - |
MW-0.1-75 | 75 | 0.65 | 0.001 | 1.00 | |
MW-0.1-50 | 50 | 0.75 | 0.002 | 1.15 | |
MW-0.1-25 | 25 | 0.75 | 0.003 | 1.15 | |
MW-1.0-100 | 100 | 18.8 | 0.012 | - | |
MW-1.0-75 | 75 | 17.3 | 0.025 | 0.92 | |
MW-1.0-50 | 50 | 12.3 | 0.019 | 0.65 | |
MW-1.0-25 | 25 | 9.8 | 0.022 | 0.52 |
Group | Specimen Name | Electrical Resistance (kΩ) | Magnetic Field | Standard Deviation | Specimen/100%-Filled Specimen |
---|---|---|---|---|---|
Group #1 | OPC-100 | 1390 | 0.0007 | 0.001 | - |
OPC-50 | 1440 | 0.0007 | 0.000 | 1.00 | |
Group #2 | MW-0.1-100 | 1040 | 0.0010 | 0.000 | - |
MW-0.1-75 | 1110 | 0.0009 | 0.000 | 0.94 | |
MW-0.1-50 | 1270 | 0.0008 | 0.001 | 0.82 | |
MW-0.1-25 | 1390 | 0.0007 | 0.001 | 0.75 | |
MW-1.0-100 | 0.449 | 2.2271 | 0.002 | ||
MW-1.0-75 | 0.575 | 1.7391 | 0.001 | 0.78 | |
MW-1.0-50 | 0.846 | 1.1820 | 0.001 | 0.53 | |
MW-1.0-25 | 0.934 | 1.0707 | 0.002 | 0.48 |
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Lee, H.; Park, S.; Park, S.; Chung, W. Enhanced Detection Systems of Filling Rates Using Carbon Nanotube Cement Grout. Nanomaterials 2020, 10, 10. https://doi.org/10.3390/nano10010010
Lee H, Park S, Park S, Chung W. Enhanced Detection Systems of Filling Rates Using Carbon Nanotube Cement Grout. Nanomaterials. 2020; 10(1):10. https://doi.org/10.3390/nano10010010
Chicago/Turabian StyleLee, Heeyoung, Seonghoon Park, Sanggyu Park, and Wonseok Chung. 2020. "Enhanced Detection Systems of Filling Rates Using Carbon Nanotube Cement Grout" Nanomaterials 10, no. 1: 10. https://doi.org/10.3390/nano10010010