1 Introduction
2 Materials
3 Methods
3.1 Image Analysis of MWNT Distribution in MWNT-Embedded Cement Composites
3.1.1 Specimen Preparation and Image Acquisition for Image Analysis
Denotations | Mix proportions (g) | MWNT (vol%) | |||||
---|---|---|---|---|---|---|---|
Water | Cement | SF | SP | Nylon fiber | MWNT | ||
W26–M06 | 26 | 100 | 20 | 1.6 | 0 (omitted) | 0.6 | 0.66 |
W30–M06 | 30 | 0.62 | |||||
W34–M06 | 34 | 0.59 | |||||
W38–M06 | 38 | 0.56 | |||||
W42–M06 | 42 | 0.53 |
Denotations | Mix proportions (g) | Flow (mm) | ||||||
---|---|---|---|---|---|---|---|---|
Group | Type | Water | Cement | MWNT | SP | Nylon fiber | ||
Wt% by cement | Vol% | |||||||
LF–M | LF–M0 | 25 | 100 | 0 | 0 | 0.6 | 0.2 | 160 |
LF–M0.3 | 25 | 0.3 | 0.39 | 1.0 | 126 | |||
LF–M0.6 | 25 | 0.6 | 0.76 | 3 | 125 | |||
LF–M1.0 | 30 | 1.0 | 1.14 | 4.54 | 120 | |||
LF–M1.5 | 36 | 1.5 | 1.56 | 4.4 | 114 |
3.1.2 Image Processing and Analysis Procedures
3.2 DC Conductivity of the MWNT-Embedded Cement Composites
3.2.1 Specimen Preparation for DC Conductivity Measurement
Denotations | Mix proportions (g) | ||||||
---|---|---|---|---|---|---|---|
Water | Cement | SF | SP | Nylon fiber | MWNT | Flow (mm) | |
M06–W26 | 26 | 100 | 20 | 1.6 | 0.2 | 0.6 | 102 |
M06–W30 | 30 | 127 | |||||
M06–W34 | 34 | 151 | |||||
M06–W38 | 38 | 211 | |||||
M06–W40 | 40 | 250 | |||||
M06–W42 | 42 | >250 | |||||
M06–SP0 | 40 | 0 | 130 | ||||
M06–SP04 | 0.4 | 119 | |||||
M06–SP16 | 1.6 | 250 | |||||
M06–SP32 | 3.2 | >250 | |||||
M06–SP64 | 6.4 | >250 |
Denotations | Mix proportions (g) | ||||||
---|---|---|---|---|---|---|---|
Group | Type | Water | Cement | MWNT | SP | Nylon fiber | |
Wt% by cement | Vol% | ||||||
HF-M | HF-M0 | 40 | 100 | 0 | 0 | 1.6 | 0.2 |
HF-M0.3 | 0.3 | 0.31 | |||||
HF-M0.6 | 0.6 | 0.62 | |||||
HF-M1.0 | 1.0 | 1.02 |