Research Article
Effect of Nanotube Geometry on the Strength and Dispersion of CNT-Cement Composites
Table 2
Coding of aspect ratio and weight fractions variables for RSM analysis.
| Batch | Aspect ratio | Coded aspect ratio | Weight fraction (wt.%) | Coded weight fraction |
| 0.03LL | 83 | −1 | 0.03 | −1 | 0.08LL | 83 | −1 | 0.08 | −0.545 | 0.15LL | 83 | −1 | 0.15 | 0.09 | 0.25LL | 83 | −1 | 0.25 | 1 | 0.03HD | 375 | −0.53 | 0.03 | −1 | 0.08HD | 375 | −0.53 | 0.08 | −0.545 | 0.15HD | 375 | −0.53 | 0.15 | 0.09 | 0.25HD | 375 | −0.53 | 0.25 | 1 | 0.03MD | 800 | 0.147 | 0.03 | −1 | 0.08MD | 800 | 0.147 | 0.08 | −0.545 | 0.15MD | 800 | 0.147 | 0.15 | 0.09 | 0.25MD | 800 | 0.147 | 0.25 | 1 | 0.03LD | 1,333 | 1 | 0.03 | −1 | 0.08LD | 1,333 | 1 | 0.08 | −0.545 | 0.15LD | 1,333 | 1 | 0.15 | 0.09 | 0.25LD | 1,333 | 1 | 0.25 | 1 |
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