The Role Of Steel Fiber Added To Cement Matrix

Steel fiber concrete is an important way to improve the quality of concrete. Fiber concrete is usually a cement-based composite material composed of cement slurry, mortar or concrete as the base material, and non-continuous short fibers or continuous long fibers as reinforcement materials. Its main function is to limit the development of cracks through bridging. , thereby improving the function of concrete. The role of steel fiber added to cement matrix:
1. Crack prevention: Prevent the expansion of defects (micro-cracks) in the cement matrix and effectively delay the appearance of new cracks.
2. Anti-seepage: Improve the compactness of the cement matrix by blocking cracks to prevent the intrusion of external moisture.
3. Durability: Improve the frost resistance and fatigue resistance of the cement matrix and improve its durability.
4. Impact resistance: Improve the ability of the cement matrix to withstand deformation, thereby improving its durability and impact resistance.
5. Tensile strength: Under the premise of using high elastic modulus fiber, it can improve the tensile strength of the matrix.
6. Beautiful: Improve the appearance of cement structures, making them more dense, smooth, smooth and beautiful.
During the use of steel fiber, mixing is a very important link, which determines all the physical and chemical properties of the final steel fiber concrete. Therefore, it is necessary to mix in a scientific way to maximize the performance of steel fiber concrete and make it meet and exceed the design requirements. In terms of general steel fiber applications, there are no more than two types: manual mixing and mechanical mixing. Manual mixing is usually used on small repair projects, and the total concrete volume is not too much. Therefore, generally just try to mix the steel fiber and concrete thoroughly and evenly.