Polypropylene fiber is a high-strength bundled fiber, typically made from polypropylene as the primary material, and manufactured through a unique production process. This fiber is widely used in concrete and mortar to effectively control microcracks caused by factors such as plastic shrinkage, drying shrinkage, and temperature changes. By adding polypropylene fibers to concrete or mortar, the formation and development of cracks can be prevented, and the propagation of microcracks can be suppressed, significantly improving the concrete's crack resistance, impermeability, impact resistance, and seismic performance. The polypropylene fibers are evenly distributed within the concrete, enhancing its toughness and overall strength, making it more resistant to external stress and impact.
Polypropylene fibers can effectively improve concrete's performance when affected by external environmental factors such as drying shrinkage, temperature changes, and plastic shrinkage, reducing the occurrence of cracks. These microcracks can adversely affect the overall performance of the structure during the construction and use of concrete, leading to reduced durability and compromised waterproofing performance. By forming a microscopic supporting structure within the concrete, polypropylene fibers delay the appearance of cracks, enhancing the concrete's crack resistance and impermeability.
Polypropylene fibers should be stored in a cool, dry environment, protected from direct sunlight and high temperatures to prevent aging, which could impair their performance. During use, safety precautions should be followed to avoid fiber dispersion that could harm the human body. Proper protective equipment, such as masks and goggles, should be worn to prevent inhalation or contact with the fibers. The dosage of polypropylene fibers should be adjusted based on specific project requirements and the performance needs of the concrete. Typically, the fiber content ranges from 0.1% to 0.3%, and excessive inclusion may affect the workability and flowability of the concrete. Therefore, the most suitable dosage should be determined based on the specific conditions of the project and the strength requirements of the concrete.
|
Product name |
Polypropylene fibers |
|
Diameter |
25+/-5 microns |
|
Length |
6mm, 12mm, 18mm... |
|
Tensile Strength |
> 450Mpa |
|
Crack Elongation |
15-20% |
|
Melting Point |
160-170 |
|
Acid & Alkali Resistance |
Strong |
|
Packing |
600g, 900g, 1kg |
