Since 1824 cement was born less than 200 years, the concrete material itself has undergone a process of evolving from a low intensity, the gradual development of a single species of the family of high-strength concrete, and other varieties of light. However, generally considered higher concrete strength, toughness worse, the higher brittleness, the lack of ductility and crack resistance to seismic performance security risk. Therefore, for a long time many scholars continue to explore ways and means to improve the performance of concrete above.

After much trial and error proof, adding polypropylene fibers in concrete can be well controlled microcracks concrete / mortar plastic shrinkage, shrinkage, temperature changes and other factors, to prevent and suppress the formation and development of cracks in the concrete native, has greatly improved concrete / crack impermeability mortar, impact and abrasion resistance, increase the toughness of concrete, thereby increasing the life of concrete.

Polypropylene fibers

Polypropylene fiber action principle

Tensile strength of concrete in the hardening process, the hydration reaction of cement and water was caused by concrete volume shrinkage in the late and because free water evaporation caused by concrete shrinkage, the shrinkage stress exceeds the cement matrix of concrete will be generated internally microfractures. Development of micro-cracks is about 70% complete at 3-7d gel during this time is less than the tensile strength of concrete 1MPa.

Join polypropylene fibers throat in concrete, fiber can easily be formed quickly and evenly dispersed in the concrete support system to a chaotic, scattered concrete directional stress, concrete natively prevent the occurrence and development of cracks, elimination or reduction of native micro cracks The number and scale, greatly improving the impermeability of concrete crack, improve concrete toughness, thus prolonging the service life of concrete. In addition, as the fiber itself has a certain strength, the fibers are uniformly dispersed in the concrete anchor role and form, which may absorb some of destructive energy in an instant.

Polypropylene Fiber Applications

Polypropylene fiber can be widely used in water conservancy, hydropower projects, in-situ and precast concrete, municipal, roads, bridges, housing construction, industrial production and other areas of premixed mortar.

Polypropylene fiber concrete cracks probability greatly reduced, so that the project construction presents the perfect posture. Saving labor costs, extend the life of the building. Save all unhappy, a wood there!

Jiangsu Sisiyuan Fiber Co., Ltd. Main polypropylene fibers, lignin fibers, cellulose fibers and other fibers used in construction projects. Product details, please call our service hotline!