Carbon Nanotube Effect on the Ductility, Flexural Strength, and Permeability of Concrete

Table 2

CNT physical properties (https://www.us-nano.com).

CNT type	Aspect ratio	Purity (wt.%)	Outside diameter (nm)	Inside diameter (nm)	Length (μm)	SSA (m^2/g)	Color	Youngs modulus (GPa)	Tensile strength (GPa)	Density (g/cm^3)
Long-thin	1,333	>95	10-20	5-10	10-30	>200	Black	1200	150	2.6