Teräskuitujen

Teräskuidut are steel fibers used as reinforcement in concrete. They are typically manufactured from high-strength steel wire and are often deformed to enhance their mechanical anchorage within the concrete matrix. The primary purpose of incorporating teräskuidut into concrete is to improve its structural performance, particularly its tensile strength, ductility, and resistance to cracking.

The use of teräskuidut can significantly enhance the flexural strength and toughness of concrete. When concrete is subjected to tensile stress, it tends to crack. Steel fibers act as a crack arresting mechanism, bridging the cracks and preventing their propagation. This leads to a more ductile failure mode, where the concrete can withstand greater deformation before fracturing.

Teräskuidut find application in various construction projects, including industrial floors, pavements, precast concrete elements, tunnel linings, and shotcrete. They are particularly beneficial in applications where enhanced durability, impact resistance, and resistance to thermal cracking are required. The dosage and type of teräskuidut used depend on the specific performance requirements of the concrete application.

The introduction of steel fibers into concrete can alter its workability. Proper mix design and the use of appropriate admixtures are necessary to ensure adequate workability and uniform distribution of the fibers throughout the concrete. While they offer significant advantages, the cost of steel fibers can be a factor in their selection. However, the long-term benefits in terms of durability and reduced maintenance often outweigh the initial material cost.