What are the advantages of mortar containing polypropylene fibers?
Release Time:
2020-04-27
Source:
Polypropylene fibers boast high strength, excellent toughness, superior chemical resistance, strong antimicrobial properties, and low cost.
Polypropylene fibers boast high strength, excellent toughness, superior chemical resistance, strong antimicrobial properties, and low cost, making them widely used in mortar and concrete products. Mortars incorporating polypropylene fibers exhibit a range of fundamental performance characteristics that enhance construction quality; these are described in detail below:
(1) It can effectively prevent cracking in wall plastering; when fiber-reinforced mortar is used for the wall finish, cracking can be effectively prevented.
(2) Ensure that the mortar base layer is solid, clean, aesthetically pleasing, and smooth, thereby making it suitable for application with various types of coatings. The increasingly widespread engineering application of exterior wall coatings has placed higher demands on the mortar base layer; fiber-reinforced mortar, with its excellent crack resistance, impact resistance, and freeze-thaw durability, can enhance the technical performance of the base layer, meet all construction-process requirements, and guarantee construction quality.
(3) It can to the greatest extent compensate for the technical shortcomings in the promotion and application of new lightweight wall materials. All types of lightweight, energy-efficient wall materials, to varying degrees, suffer from cracking in the mortar finish layer and inadequate impermeability, which undermines their value in widespread adoption. When these wall materials are used, pairing them with fiber-reinforced mortar as the plastering finish layer can effectively address these performance deficiencies, thereby helping to ensure the quality of the construction project.
(4) It can effectively enhance plastering efficiency and reduce material waste. Due to its superior bonding and stability compared with plain cement mortar, fiber-reinforced mortar is easier to apply during plastering, and the amount of mortar that falls or drips is significantly reduced, thereby substantially improving plastering efficiency and minimizing material loss.
(5) Polypropylene fibers can partially or fully replace steel wire mesh or perform similar structural functions. Due to their physical reinforcement effect within the cement matrix, they can, to a certain extent, serve as a substitute for steel wire mesh—albeit at least in part—thereby significantly contributing to material savings and reduced construction costs.
(6) Polypropylene-fiber-reinforced mortar surfacing exhibits excellent workability and finishability. This is because the fiber material suitable for incorporation into the mortar is a fine, monofilament-type fiber that has virtually no impact on the surface appearance of the mortar layer.
(7) It is conducive to the construction quality of the facing brick finish. When fiber-reinforced mortar is used as the base layer, the reduction or near elimination of cracking plays a crucial role in ensuring adequate bond strength of the facing bricks and preventing crack formation and hollowing in the mortar joints.
(8) Polypropylene-fiber-reinforced mortar exhibits exceptional resistance to aging and reliable durability.
(9) The process is simple and the application scope is broad. For fiber-reinforced mortar, the original mix proportions can be maintained; it is only necessary to add the specified dosage per unit volume to the mortar and mix thoroughly until uniform. Moreover, no special requirements are imposed on the mixing equipment or the mixing procedure.
(10) Polypropylene-fiber-reinforced mortar can effectively address the technical performance shortcomings associated with the innovative application and development of modern engineering technologies, such as structural self-waterproofing and roof waterproofing. Because the polypropylene fibers in the mortar significantly enhance the crack-resistant ductility of the mortar matrix, when used in conjunction with self-waterproofing reinforced concrete (RC) wall structures, foundation mat slabs, and roof beam–slab systems, it can serve as a non-structural reinforcement material to prevent plastic shrinkage of the mortar surface layer.
