The comprehensive performance of polypropylene fiber reinforced concrete is better than that of ordinary concrete. It has the characteristics of simple construction method, safe and harmless, and reliable quality performance. It is especially suitable for rigid waterproof concrete, mass concrete, high strength concrete, etc., and has obvious technical and economic advantages. As the initial investment cost of polypropylene fiber is slightly high, it is only used in key parts of key projects and special projects at present. With the gradual localization of polypropylene monofilament fiber and the continuous progress of construction technology, it will be widely used in the fields of water conservancy, industrial and civil buildings, roads and bridges.
Applications of polypropylene fiber reinforced concrete as below:
1 Construction
Polypropylene fiber reinforced concrete is used to cast on-site the basement floor, side wall, roof, roof, pool and other self waterproof concrete, as well as the super wide, super thick and super large concrete components such as mass concrete of high-rise building foundation and beam slab of transfer layer. The concrete is easy to use, and it can improve the impermeability, crack resistance and frost resistance of self waterproof concrete, and effectively solve the cracks caused by temperature stress of mass concrete.
2 Civil and water conservancy works
The comprehensive performance of concrete pavement, bridge slab, reservoir dam, harbor and aqueduct mixed with polypropylene fiber is superior to ordinary concrete engineering in comprehensive performance, such as folding resistance, crack resistance, fatigue resistance, wear resistance and sea water erosion resistance. Especially in the condition of large traffic volume and frequent vehicle traffic, the performance of anti fatigue performance of polypropylene fiber is more prominent, and the performance of anti fatigue is more prominent in the climate change Under the condition of severe chemical and frequent freezing thawing, the anti freezing and thawing performance of polypropylene fiber reinforced concrete can be fully reflected.
3 Precast concrete products
Polypropylene fiber concrete is used for reinforced concrete prefabricated components. Cement products (pipes, blocks, etc.) can significantly improve the appearance quality, which helps to prevent and reduce surface cracks of prefabricated components, reduce the missing edge and angle falling, and increase its impermeability and prevent corrosion of steel bars.
4 Ready mixed concrete
The premixed concrete with polypropylene fiber can obviously improve the workability of concrete, reduce bleeding and prevent plastic cracks in commercial concrete. Polypropylene fiber can be used in concrete to make pump and other high performance concrete with any chemical additive. High performance concrete is widely used in high-rise buildings and long-span bridges for its high strength, large fluidity and excellent durability. The toughness, crack resistance and ductility of high performance concrete can be effectively improved by using polypropylene fiber composite.
