Consistently demonstrated improvements to freeze/thaw resistance result in more durable concrete
Concrete Permeability** (% ↓)
67
---
UltraFiber 500® reduces water permeability of stressed and unstressed concrete which minimizes the potential for corrosion of structural rebar
Absorbency Absorption Rate (mm/s0.5) Water Absorbed (grams)
0.0033 14.3
0.0045 - 0.0054 18.3 - 21.8
Lower absorbency due to more uniform voids and finer porosity results in improved long-term durability
Paste Bonding
Bonding
No bonding
Better bonding with paste results in fewer microscopic voids and openings
Fiber Tensile Strength (KSI)
90 - 130
30 - 70
UltraFiber 500® fibers are as strong as steel
Fiber Count (fibers/lb)
720 X 106
44 X 106
Over 700 million crack-fighting fibers disperse evenly throughout the concrete, facilitating their ability to intersect micro-cracks as they may form, dispersing tensile stress, and reducing macro-cracks
Surface Area (cm2/g)
25,000
1,500
UltraFiber 500® enhances surface bonding of fibers to concrete, improving bond strength and reducing plastic shrinkage cracking
Fiber Spacing* (µm)
640
950
Closer fiber spacing intercepts more micro-cracks, reducing their growth, ensuring unsurpassed plastic shrinkage cracking control
Fiber Dispersion
No Clumps
Clumps
More uniform dispersion into concrete provides a more uniform performance
1. Reduction in plastic shrinkage cracks ICC Code approved ESR-1032
Only holds concrete together after it cracks
2. Increases compressive strengths of plain non-reinforced concrete ASTM C39
No effect
3. Increases flexural strength of plain nonreinforced concrete
Increases tensile strength if properly placed (upper 1/3 of concrete slab)
4. Corrosion resistant
Corrodes when exposed to water and chemicals; aesthetics and possible disruption of concrete
5. Superior finish with no effect on workability of mix
No effect on finish, but difficult to maintain placement in slab
6. Easy to place in concrete mix - no minimum cover
Difficult to place, especially in rolls; 1" minimum cover required, upper 1/3
7. Easy to use and cost effective - no labor cost -no safety issues
Difficult to install and expensive - high labor costs saftey issues
8. Provides three dimensional reinforcement Provides reinforcement in one plane 9. Always positioned throughout concrete
Seldom - if in lower 2/3 of slab, no beneficial effect
10. Fibers bond effectively with concrete
Bond can deteriorate over time as a result of oxidation/rust
11. Alkali resistant ASTM D6942
Will deteriorate if not properly placed and protected
12. Improves freeze/thaw resistance
No effect
13. Improves curing/internal hydration
No effect
14 Improves impact and shatter resistance
Minor resistance provided if properly placed (upper 1/3 of concrete)
15. Meets or exceeds ASTM specifications
Only if certified
16. Absorbs sealers, color and stains
No effect
17. High bond strength to rebar
No effect
18. Hydrophilic fiber extends hydration process "Provides Internal Curing"
No effect
19. Product supplid in concrete from accurate Storage difficult and detrimental if stored outside automated fiber disperser 20. American made from a renewable natural Usually imported and rusty at installation resource
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Page 1 of 13. Circular No.500 Dated: 17. th. January 2013. To,. 1. The Chief Accountant, RBI, Deptt. Of Govt, Bank Accounts, Central Office. C-7, Second Floor, Bandre- Kurla Complex, P B No. 8143, Bandre East. Mumbai- 400051. 2. All CMDs, Public Sect
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