Effect of Nanotube Geometry on the Strength and Dispersion of CNT-Cement Composites

Table 1

Experiment design.

Batch #	Batch name	CNT/cement weight fraction (%)	Specimen #	CNTs diameter (nm)	CNTs length (µm)	Aspect ratio	Number of specimens
Effect of diameter test batches
1	0.03 (LD)	0.03	S1–S18	10–20	10–30	1333	18
2	0.03 (MD)	0.03	S19–S36	20–30	10–30	800	18
3	0.03 (HD)	0.03	S37–S54	30–50	10–30	375	18
4	0.08 (LD)	0.08	S55–S72	10–20	10–30	1333	18
5	0.08 (MD)	0.08	S73–S90	20–30	10–30	800	18
6	0.08 (HD)	0.08	S91–S108	30–50	10–30	375	18
7	0.15 (LD)	0.15	S109–S126	10–20	10–30	1333	18
8	0.15 (MD)	0.15	S127–S144	20–30	10–30	800	18
9	0.15 (HD)	0.15	S145–S162	30–50	10–30	375	18
10	0.25 (LD)	0.25	S163–S180	10–20	10–30	1333	18
11	0.25 (MD)	0.25	S181–S198	20–30	10–30	800	18
12	0.25 (HD)	0.25	S199–S216	30–50	10–30	375	18
Additional batches to compare the effect of length
13	0.03 (LL)	0.03	S217–S234	10–30	0.5–2	83	18
14	0.08 (LL)	0.08	S235–S252	10–30	0.5–2	83	18
15	0.15 (LL)	0.15	S253–S270	10–30	0.5–2	83	18
16	0.25 (LL)	0.25	S271–S288	10–30	0.5–2	83	18
17	Cement (control)	0	S289–S306	—	—	—	18