Polypropylene fibers,polypropylene fibres,concrete fiber,Concrete reinforced, reinforcement fiber,macro fibers concrete,Micro Synthetic Concrete,Macro Synthetic Concrete, Macro fiber Synthetic Concrete

Polypropylene fibers

Polypropylene fibers

Saturday, May 30, 2020

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8/28/2016 12:37:34 PM | 12:370 نظر1807 بازدید

 

 

 

 

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Polypropylene fibres                        

 

 

Fiber length: 6,12,18 MIL                               

                                                             

Specific gravity: 0.91                                         

 

Tensile strength: (170 MPa)                            

                                                                              

Flexural strength:  (2.1 GPa)                           

 

Melting point: 160 C                                          

 

Water absorption: NIL                                      

 

 

 

PRODUCT DESCRIPTION

 

Polypropylene fibres is a fiber with a diameter of 19 microns made of extruded polypropylene granules, combined in bundles and cut to length 6,12,18 mm.

 

USE

  1. Added to concrete mixture used as microreinforcement minimizing cracking due to the inherent shrinkage of concrete
  2. For use in concrete mixtures for spraying concrete, screeds and mortars
  3. The addition of polypropylene fibers eliminates the use of expensive and often ineffective antishrinkage steel mesh reinforcement.

 

 PRODUCT CHARACTERISTICS

  1. Stops the formation of natural shrinkage cracks in the first period of "life" of concrete, where it is low Young’s modulus and shrinkage stresses exceed its strength
  2. The addition of polypropylene fibers and appropriate selection of the concrete mixture causes cracks are extremely small, and their sizes decreased by two orders of magnitude and cracks are invisible without affect to the strength of concrete.
  3. Action of polypropylene fibers ceases when the Young's modulus of concrete exceeds the value of Young's modulus of polypropylene
  4. Reduction of cracks
  5. Increases strength of concrete
  6. Increases waterproof
  7. Additional aeration to increase frost resistance
  8. Slowdown of carbonation of concrete

 

 

 DOSAGE

 

 polypropylene fibers are added to concrete mixture in quantity of 0.7 kg/m3  to the mortar  2.8 kg/m3  The difference of dosing is result of larger share of the cement matrix in mortars.

 

MIXING

polypropylene fibers are added to the mixer after the aggregate, and before the cement, water and admixtures. Required mixing time of couple of minutes.

Mixing in truck mixer required a high rotational speed (12 ‐18 RPM), Then pour the appropriate amount polypropylene fibers and leave mixer at high speed for 4 to 6 minutes to obtain regular mix (no less than 70 revolutions).

 

 

PACKAGING

20 kg in bags

 

 

 

 

   
   
   

 

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