Difference between Polypropylene macro fiber and steel fiber
Writer： admin Time：2024-07-11 17:18 Browse：
Difference between Polypropylene macro fiber and steel fiber
Concrete anti-cracking fiber refers to adding to the interior of concrete to strengthen and toughen it. It has a good effect on preventing cracks in the concrete and the surface due to changes in time, temperature, moisture and other factors. There are many types of concrete anti-cracking fibers, and the materials are also various. Among them, steel fiber, polypropylene macro fiber (pp macro fiber) are easy to confuse people, and they do not understand what is the difference between them.
First of all, steel fiber refers to the aspect ratio (the ratio of fiber length to diameter) made by cutting thin steel wire, cold-rolled strip shearing, ingot milling, or rapid condensation of molten steel. When the fiber cross-section is non-circular, the conversion equivalent Fibers with a cross-sectional circular area) of 40 to 80. The main advantages of steel fibers are high strength and high hardness, but the disadvantages are also obvious, that is, they have been corroded and rusted, resulting in reduced performance and poor weather resistance.
Secondly, Polypropylen macro fiber is relatively thick synthetic fibers, are similar in shape to steel fibers, so they become imitation steel or plastic steel fibers. The material of both is polypropylene, but the name is different. Polypropylene fibers have excellent corrosion resistance, while being rigid and flexible. Polypropylene fiber has partially or completely replaced steel fiber in many engineering projects, because polypropylene fiber is also under continuous research and in-depth development. In the future, the performance of the product will be modified, and the strength of the product will change It has been greatly improved and improved, and the future development space is extremely broad.
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