Hebei Steel Fiber

型号：

0.75*60mm

Steel fiber is a new product of our factory, mainly used in concrete. It is a new type of multi-phase composite material. These randomly distributed steel fibers can effectively prevent the expansion of micro cracks and the formation of macro cracks inside the concrete, significantly improving the tensile, bending, impact resistance and fatigue resistance of the concrete, and have good ductility. It plays a win-win role for both sides. Compared with ordinary concrete, steel fiber concrete has a certain improvement in tensile strength, flexural strength, and shear strength. The improvement in compressive strength is smaller, generally in the range, but the compressive toughness is greatly improved. According to various theories of fiber reinforcement mechanism, such as fiber spacing theory, composite material packing theory and micro-fracture theory, as well as the analysis of a large number of experimental data, it can be determined that the fiber reinforcement effect mainly depends on the matrix strength, fiber aspect ratio, fiber The influence of the volume ratio, the bonding strength between the fiber and the matrix, and the distribution and orientation of the fiber in the matrix. Therefore, when steel fiber concrete is crushed, most of the fibers are pulled out rather than broken. Therefore, improving the bonding strength between the fibers and the matrix is one of the important controlling factors for improving the fiber reinforcement effect.