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AR GLASS FIBERS FOR GRFC
Dec 21, 2017

With the original E-glass fibers, durability was a big issue since the glass broke down and lost strength. The glass fibers used in GFRC since the 1970s are alkali-resistant glass and the durability issue has mostly gone away. A few things you should know about AR glass fibers:

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Fibers are disbursed throughout the concrete mix. 

Chopped fibers are 1/4 inch, ½ inch, and 1inch long.

The alkali resistance of AR glass fibers is a result of adding zirconia (zirconium oxide) to the glass,the best fibers have zirconia contents of 14.8% and 16.8% or higher.

A fiber roving in a spool must be chopped by a chop gun as the GFRC is mixed and applied.


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