Journal of Materials / 2014 / Article / Tab 1

Research Article

Effect of Carbon Nanotube Size on Compressive Strengths of Nanotube Reinforced Cementitious Composites

Table 1

Properties and composition of untreated MWNTs.

Types of MWNT and propertiesM1M2M3M4M5M6M7

Outside diameter (nm)>50 20–30 10–20 <88–15 20–40 30–50
Length (μm)10–2010–3010–3010–3010–3010–3010–20
Purity (wt%)>95>95>95>95>95>95>95
Ash (wt%)<1.5<1.5<1.5<1.5<1.5<1.5<1.5
Specific surface area, SSA (m2/g)>40>110>233>500>233>110>60
Electrical conductivity, EC (s/cm)>10−2>10−2>10−2>10−2>10−2>10−2>10−2