How does Modified Polypropylene Monofilament Fiber become a perfect combination of strength and stability?
Publish Time: 2024-08-05
The reason why Modified Polypropylene Monofilament Fiber can become a perfect combination of strength and stability is mainly due to the various positive effects of Modified Polypropylene Monofilament Fiber in concrete.1. Improve crack resistancePrevent the formation and development of cracks: Modified Polypropylene Monofilament Fiber forms a uniform random support system in concrete, with a number of more than 8 million per cubic meter. This structure effectively prevents shrinkage segregation, settlement and the formation and development of other cracks inside the concrete. Experiments have shown that the crack resistance of concrete/mortar using Modified Polypropylene Monofilament Fiber is increased by nearly 70%.Inhibit the expansion of microcracks: Modified Polypropylene Monofilament Fiber can prevent the expansion of existing microcracks in the cement matrix and effectively delay the appearance of new cracks. This crack-blocking effect mainly inhibits early plastic cracking of concrete.2. Enhanced impermeabilityImproved compactness: The addition of Modified Polypropylene Monofilament Fiber significantly improves the compactness of concrete/mortar, reduces the width of internal cracks, and reduces the possibility of through cracks, thereby greatly improving the impermeability of concrete. Experiments show that the impermeability of concrete/mortar with Modified Polypropylene Monofilament Fiber is increased by more than 60%.Blocking capillary action: The evenly distributed fine fibers in concrete play a role in blocking capillary action, reducing the transfer rate of water, chloride ions, air, etc. in concrete, and further improving impermeability.3. Enhanced toughness and impact resistanceImproved plastic deformation ability: Modified Polypropylene Monofilament Fiber has the advantages of large elongation, good toughness, and large elastic modulus. It can absorb external forces in concrete and avoid stress concentration, thereby improving its ability to withstand impact loads such as fatigue loads.Improve flexural tensile strength and flexural strength: Experiments show that when the content of modified polypropylene (coarse) fiber reaches 0.8%, the flexural strength of fiber concrete is 1.304 times that of plain concrete.4. Improve durabilityFreeze-thaw resistance: The addition of modified polypropylene fiber can introduce a small amount of air into the concrete, reducing the expansion and contraction damage of concrete caused by freeze-thaw cycles. At the same time, the improvement of the impermeability of fiber concrete is also conducive to its frost resistance.Anti-carbonization and anti-alkali aggregate reactivity: Due to the addition of polypropylene fiber, the crack resistance and impermeability of concrete are improved, thereby delaying the carbonization rate of concrete and reducing the alkali-aggregate reaction in concrete.5. Improve the appearance quality of concreteMicro-soft monofilament fiber: Modified Polypropylene Monofilament Fiber is not like some rigid additives that will expose the surface of concrete components and affect the appearance. On the contrary, they are distributed in large quantities in concrete, firmly combined with the cement base, and improve the appearance quality of concrete components.In summary, Modified Polypropylene Monofilament Fiber has a variety of positive effects in concrete, such as improving crack resistance, enhancing impermeability, enhancing toughness and impact resistance, improving durability, and improving the appearance quality of concrete, making Modified Polypropylene Monofilament Fiber a perfect combination of strength and stability.
