Research Article

Preparation of Nano-SiO2/Carbon Fiber-Reinforced Concrete and Its Influence on the Performance of Oil Well Cement

Table 3

Properties of carbon fiber.

Fiber length (μm)100~1000
Fiber diameter (μm)8~20
Tensile strength (MPa)>3300
Bulk density (g/cm3)1.76
Elastic Modulus (GPa)220