Potential of Carbon Nanotube Reinforced Cement Composites as Concrete Repair Material

Table 2

Proportion of different components used in the initial phase of the study and corresponding strengths of the control and composite samples.

Sample ID	MWNT proportion; in terms of cement wt	Plasticizer proportion in terms of cement wt	Plasticizer proportion in terms of MWNT wt	Compressive strength (MPa)				Flexural strength (MPa)
				3 days	7 days	28 days	100 days	3 days	7 days	28 days
CS	—	—	—	23.7	27.7	33.3	37	2.86	3.3	4.67
CS +	—	0.008	—	26.1	28.6	32.8	38.6	—	—	—
0.05% +	0.0005	0.008	16	27.8	30.8	36	40.2	3.1	3.55	4.93
0.10% +	0.0010	0.008	8.0	29.8	33.5	38.3	42.1	3.54	4.11	5.58
0.20% +	0.0020	0.008	4.0	28.9	33.9	37.8	42.9	3.59	3.89	5.45
0.30% +	0.0030	0.008	2.7	28.4	35.3	38.5	42.6	3.46	3.95	5.42
0.50% +	0.0050	0.008	1.6	26.1	29.2	33	35.7	—	—	—