The role of steel fiber in concrete2
Mar 27, 2025|
Steel fiber is a common building material, mainly used to enhance the strength and durability of concrete. Steel fiber has many different shapes and types, including shear wave, cold-drawn end hook and milling pin. The following is an introduction to these different types of steel fibers and their functions.
1. Shear wave steel fiber
Shear wave steel fiber is a common steel fiber shape, characterized by wavy protrusions on the surface, which can increase the bonding force with concrete. This type of steel fiber is suitable for various types of concrete structures, including bridges, highways, tunnels, floors and walls of buildings, etc.
The main functions of shear wave steel fiber are as follows:
(1) Enhance the tensile strength and compressive strength of concrete and improve the bearing capacity of the structure.
(2) Improve the impact resistance and fatigue resistance of concrete and improve the durability of the structure.
(3) Reduce the shrinkage and expansion of concrete and reduce the possibility of cracks.
(4) Reduce the brittleness of concrete and improve its toughness.
2. Cold-drawn end hook steel fiber
Cold-drawn end hook steel fiber is a high-strength and high-toughness steel fiber. Its characteristics are that the two ends are bent into a hook shape, which can better bond with concrete. This type of steel fiber is suitable for structures that require high strength, high toughness, impact resistance and fatigue resistance.
The functions of cold-drawn end hook steel fiber are mainly in the following aspects:
(1) Enhance the tensile strength and compressive strength of concrete and improve the bearing capacity of the structure.
(2) Improve the impact resistance and fatigue resistance of concrete and improve the durability of the structure.
(3) Reduce the shrinkage and expansion of concrete and reduce the possibility of cracks.
(4) Improve the toughness of concrete and reduce its brittleness.
3. Milling pin steel fiber
Milling pin steel fiber is a thin diameter, high-density steel fiber. Its characteristics are that the surface has been specially treated to better bond with concrete. This type of steel fiber is suitable for structures that require high strength, high toughness and high density.
The main functions of the steel fiber are as follows:
(1) Enhance the tensile strength and compressive strength of concrete and improve the bearing capacity of the structure.
(2) Improve the impact resistance and fatigue resistance of concrete and improve the durability of the structure.
(3) Reduce the shrinkage and expansion of concrete and reduce the possibility of cracks.
(4) Increase the density of concrete and reduce the porosity.