martensitfaser

Martensitfaser, also known as martensitic steel fiber, is a type of reinforcing material used in concrete to enhance its mechanical properties. It is made from high-carbon steel, which undergoes a phase transformation to form a hard, brittle martensite structure. This transformation is induced by rapid cooling, typically through quenching in water or oil.

Martensitfaser is characterized by its high strength, stiffness, and durability. It is often used in applications where concrete is subjected to high tensile stresses, such as in the construction of bridges, tunnels, and other infrastructure projects. The fibers are typically added to the concrete mix at a rate of 0.5% to 2% by volume, depending on the specific requirements of the project.

The addition of martensitfaser to concrete improves its tensile strength, flexural strength, and impact resistance. It also helps to reduce cracking and spalling, which can occur due to the expansion of water and other fluids within the concrete. The fibers act as a crack arrestor, preventing the propagation of cracks and improving the overall durability of the concrete.

Martensitfaser is typically supplied in the form of coils or bundles, which are then mixed with the concrete. The fibers are usually coated with a polymer to improve their bond with the concrete and to prevent corrosion. The use of martensitfaser in concrete is a well-established practice in the construction industry, and it is widely recognized for its effectiveness in enhancing the mechanical properties of concrete.