UCR Macro Synthetic Fiber
UCR Macro Synthetic Fiber is a type of macro synthetic fiber, typically made from crimped polypropylene, used for reinforcing concrete. This fiber enhances the toughness, energy absorption, crack control, and durability of concrete, serving as a replacement for or supplement to traditional steel reinforcement.
Description
Macro Synthetic Fibers are classified into three types as follows:
Micro Synthetic Fibers:
Provide secondary reinforcement; short and fine fibers used to control plastic shrinkage cracking.
Dosage: 0.6–0.9 kg/m³
Macro Synthetic Fibers:
Longer and thicker fibers used to control shrinkage cracks and partially replace structural reinforcement steel.
Dosage: Determined according to technical requirements and calculation formulas (1.5–10 kg/m³)
Property Specification
Material Polypropylene / Polyethylene blend
Density 0.92
Typical dosage 1.5–10 kg/m³
Length 51 mm
Length / Diameter ratio 74
Tensile strength 600–650 MPa
Elastic modulus (according to EN 14889.2) 9.5 GPa
Melting point 160°C
Electrical and thermal conductivity Low
Water absorption Almost negligible
Alkali resistance Excellent
Color White
Number of fibers per kg 59
Steel Fibers:
Longer and larger fibers used in structural applications with high load-bearing requirements.
Dosage: Determined according to technical requirements and calculation formulas, up to 60 kg/m³
Outstanding Features:
Serve as a substitute for secondary reinforcement, controlling plastic shrinkage caused by temperature variations
Provide greater toughness and impact resistance
Improve the flexural strength of concrete
Reduce water permeability and enhance waterproofing performance
Suitable for areas requiring non-metallic materials
Corrosion-resistant, non-rusting
Lighter than steel fibers and used in smaller quantities
Reduce material wastage, saving cost and construction time
Lower carbon emissions
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