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