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| |  | | | This fiber is used to instead of steel fibre for reinforcement to cement concrete.Compared with steel fibre, it has the advantage of easy dispersing and blending, no damage to the mixing equipments, etc.
The Twisted Bundle PP Fiber is used polypropylene as its raw material, produced the rough surface treatment by special parallel thread extruding & twisting process. It has high break strength, better dispersion and strong combining ability, will be widely used to instead of steel fibre to reinforce the cement concreat and crack- resistant.
| | | | | | | | Main Technical Specification |
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Density(g/cm 3 ) |
0.91 |
Elastic Modulus (MPa) |
>5000 |
Length(mm) |
54 |
Equivalent Dia(mm) |
0.3±0.05 |
Shape |
bundle-like and twisted |
Break tensile Ratio(%) |
>15 |
Break Strength(MPa) |
≥560 |
Resistance to acid,alkali |
strong |
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| | | | | | | Applying Instruction |
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- Ration design of the fibre concrete
Generally the recommended amount to add to the concrete is more than 2.7kg per sqm (volume ratio is 0.3%), reinforce- ment adding amount is 5.5kg, Compared with adding 47kg of steel fibre, 5.4kg polymer fibre has the same volume ratio to the concrete.
- Length
50mm for common crack-resistant requirement.
- Matching Ratio
Usually it is no need to Change the matching ratio of the concrete.
Considering the requirement of fissure-resistant, the polymer fiber is recommend to combine with the polypropylene fiber- mesh with the volume ratio of 1:1 (0.9kg fiber-mesh to per sqm of cement concrete).
- Mixer Adoption
Double-axle horizontal compelling mixer is priority.
- Mixing process
Crushed stones, fibers and sands are put into the mixer in succession.After stirring for two minutes, fiber will fully spread and then add cement and water and stir normally. The addition of materials also can be put into as common concrete, but the stirring time should be properly prolonged to make fiber com- pletely mixed.
- Shaping & Maintenance
There is no special requirement, may along the vibrating time for 30s, The maintenance of the fibre concrete should be done same as the normal concrete.
- Package
1kg or 0.5kg per bag in common ; May packed as customers' requirement.
| | | | | | | | Economy |
| | | Compared with steel fiber, Polymer fibre has the advantages of corrosion and wear-resistant reducing 50% cost with same volume to steel fibre. |
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