Which of the following is NOT a property of carbon fibre?

Explanation:

• Carbon fibre is a high-performance material known for its very high tensile strength and stiffness, making it ideal for applications where lightweight and strength are critical, such as aerospace, automotive, and structural reinforcement.

• It has excellent corrosion resistance and is chemically inert, which makes it durable in aggressive environments like marine structures or chloride-contaminated concrete.

• Carbon fibre exhibits low thermal conductivity, allowing it to serve in insulation or temperature-sensitive applications, especially where metals would transfer heat too rapidly.

• Despite its many strengths, carbon fibre is brittle and lacks ductility, meaning it fails without significant deformation; this makes high ductility an incorrect or non-characteristic property.

 Additional Information

• Glass Fibre (GFRP): Glass fibre is a composite material made from fine glass filaments. It offers high tensile strength, good chemical resistance, and is more ductile than carbon fibre. It is widely used in repairing and strengthening concrete structures due to its affordability.

• Aramid Fibre (Kevlar): Known for its high impact resistance and tensile strength, aramid fibre is used in ballistic applications and retrofitting structures subject to dynamic loads. It has moderate stiffness but excellent energy absorption capabilities.

• Basalt Fibre: Made from molten basalt rock, it has higher thermal resistance and durability than glass fibre. It is non-corrosive, eco-friendly, and used in reinforcing concrete in coastal and aggressive environments.

• Steel Fibre: Steel fibres are short, discrete lengths of steel added to concrete to improve its tensile strength and ductility. Unlike carbon fibre, they can deform plastically, making them suitable for industrial floors, pavements, and precast elements.