| |
Reinforcement Fibers |
Welded Wire Fabrics (WWF) |
| 1. |
Reduction of permeability |
Can increase permeability |
| 2. |
Bonds effectively with concrete permanently |
Bond can deteriorate over time |
| 3. |
Improves surface durability |
No surface protection provided |
| 4. |
Improves impact, shatter and abrasion resistance |
Minor resistance provided if properly placed |
| 5. |
Easy to use and cost effective - no labor costs |
Difficult to install and expensive - high labor costs |
| 6. |
Made in U.S.A. |
Not always made in the U.S.A. |
| 7. |
Easy to place in concrete mix - No minimum cover |
Difficult to place, especially if rolls - 1" minimum cover required |
| 8. |
Easy to finish with minor effect on workability of mix |
No effect on finish, but difficult to maintain placement in slab |
| 9. |
Alkali resistant |
Will deteriorate if not properly placed and protected |
| 10. |
Acid resistant |
Will deteriorate if not properly placed and protected |
| 11. |
Corrosion resistant |
Corrodes when exposed to water and chemicals |
| 12. |
Retards evaporation (bleed water reduction) and extends hydration process |
No effect |
| 13. |
Increases early strengths of plain non -reinforced concrete |
No effect |
| 14. |
Increases tensile strength of plain non-reinforced concrete |
Increases tensile strength if properly placed |
| 15. |
Provides three dimensional reinforcement |
Provides reinforcement in one plane |
| 16. |
Increases ductility |
Increases ductility if properly placed |
| 17. |
Increases freeze-thaw resistance |
No effect |
| 18. |
Always positioned in accordance with codes |
Seldom placed properly |
| 19. |
No lasting aesthetics and can be easily remedied if necessary |
Permanent if visible with little remedy possible |
| 20. |
Utilized in air-placed concrete |
Not applicable |
| 21. |
No structural integrity available |
Some if properly placed |
| 22. |
Meets or exceeds ASTM specifications |
Meets ASTM specifications if placed properly |
| 23. |
Can be stored for long periods of time |
Storage difficult and detrimental if stored outside |
