Polypropylene fiber
Length: 6, 12, 18MM
Color: white
Packing: 1.0 KG/pouch, 20.0 KGS/sack
Product application: building concrete. After joining, it can effectively prevent concrete cracking, improve waterproof performance and extend the service life of the building.
Project case: tunnel, subway, pier, highway, viaduct, airport, high-speed rail, etc., basement, swimming pool, etc.
DETAILS:
First, the product introduction
Polypropylene anti-cracking fiber is a crack-resistant modified polypropylene fiber which is added to polypropylene spinning by modified masterbatch and processed by special process and equipment. The fiber can be uniformly dispersed in the mortar.
Second, the principle of action:
After the special polypropylene fiber is blended into the concrete and stirred, the polypropylene fiber and the cement-based aggregate have a strong binding force, and the concrete material can be quickly and easily mixed and evenly distributed, and can be formed inside the concrete. Uniform chaotic support system.
During the concrete hardening process, due to the chemical shrinkage of the cement slurry, tensile stress is generated at the bonding surface between the cement slurry and the aggregate, so there are a large number of extremely fine micro-cracks in the concrete, and these micro-cracks are stressed in the concrete. It is extremely prone to stress concentration and damage.
After the fiber is added to the concrete, when the cement matrix shrinks, energy is consumed by the action of the fine reinforcement of the fiber, the cracking process of the concrete can be suppressed, and the micro crack caused by the shrinkage of the concrete is effectively reduced, and the crack is greatly improved. The crack resistance and toughness of concrete after hardening have a desirable effect on overcoming the brittleness of high-strength concrete.
Third, product advantages
Good dispersibility, high grip strength, disordered distribution, secondary reinforcement, physical reinforcement, anti-cracking and strengthening, anti-magnetic rust, anti-corrosion, alkali resistance, non-toxic and tasteless, high safety, simple construction, economical and reliable.
Fourth, the application
1. Industrial and civil buildings:
a) Rigid self-waterproof concrete structure: basement floor, side wall, roof, roof slab, swimming pool, etc.
b) Cement mortar: interior and exterior walls, ceilings, floor plastering, etc.
c) Mass concrete
d) Load-bearing plane structure: apron, parking lot, tennis court, etc.
e) Concrete prefabrication: prefabricated panels, panels, pipe grids, etc.
2. Water conservancy projects: shotcrete support, repair, tunnels, road slopes, subways, spillways, dam panels, docks, etc.
3. Road and bridge engineering: toll stations, expansion joints, airports, runways, bridge deck pavements, bridge mains, etc. of higher highways.
Fifth. Construction, dosage and description:
1, fiber length. It is 12-18mm for concrete， and 6-12mm for cement mortar.
2, the use of polypropylene fiber generally does not need to change the mix ratio of the original design, and does not replace the original design of the stressed steel.
3, the amount. Please determine the amount of addition based on the experimental data. In general, the amount of addition per cubic meter of concrete and mortar is 0.1% and the weight is about 0.9KG. The larger the amount of addition, the better the crack resistance, but the amount of addition is generally not more than 0.15%.
4. Input method and time. After the fiber is added to the dry material (sand, cement, etc.), it is put before adding water; it must be evenly distributed. Dry stirring for 30-60 seconds, after adding water, the mixing time of the concrete is less than about 40-60 seconds.
5. Adjustment of slump. The addition of fibers may increase the consistency of the mix and cause a slight decrease in slump. The slump should be adjusted by experiment before use.
6, strength. The addition of fibers does not affect the strength of the original design.
7, work pressure surface. The addition of fiber will not affect the surface. When using the steel, it should use steel or iron trowel. If the wooden trowel is not smooth enough, the fiber will be hooked out.
8. Forming and curing. Concrete incorporating fiber has no special requirements during molding and can be cured according to normal concrete.
Sixth, the main technical parameters
Material: Polypropylene
Specific gravity: 0.91
Fiber type: bundled monofilament
Elasticity: >3.5Gpa
Thermal conductivity: very low
Flash point: 580 ° C
Water absorption: none
Tensile strength: >440Mpa
Melting point: 171 ° C ~ 173 ° C
Safety: non-toxic, non-irritating, neutral
Acid and alkali resistance: extremely high
Diameter: 22~44um
Seventh, storage method and expiration date:
The original package should be stored in a cool place, must avoid from sunlight, 3 years.
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