High
Zirconia Alkali Resistant Glassfibre for Glass fibre Reinforced
Concrete (GRC)
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What
are the uses of Alkali Resistant (AR) Glassfibre?
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Alkali
Resistant (AR) Glassfibre is used for the production of Glass
fibre Reinforced Concrete (GRC) products and also for renders,
crack control in in-situ concrete, to improve the toughness
of precast concrete and to reinforce lime-based plasters.
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Why
use Alkali
Resistant (AR) Glassfibre?
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Glassfibre is essential for GRC because of its resistance to
the high alkalinity levels in cement. The fibres add strength
and flexibility to the concrete resulting in a strong yet light-weight
end product.
The
alkali resistance of Glassfibre depends principally on the
content of Zirconia (ZrO2) in the glass. The AR Glass fibre
supplied by Fibre Technologies has a minimum zirconia content
of 19%, the highest of any commercially available glass fibre.
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Why
is Zirconia content important?
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| Zirconia
is what confers alkali resistance in glass. The higher the zirconia
content the better the resistance to alkali attack. AR glassfibre
also has excellent acid resistance. |
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Figure
1 shows the relationship between Zirconia content
and the alkali resistance of glassfibres. |
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When
purchasing Glassfibre for GRC manufacture or for use with
other cementitious systems, always insist on certification
showing the Zirconia content.
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Figure
2 illustrates the difference between High Zirconia
Alkali Resistant Glass fibres and E-glass fibre when tested
in cement. |
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Large
stocks of Alkali Resistant Glass fibre and other specialist
raw materials are always available for immediate despatch
from our UK warehouse to Europe and the rest of the world.
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Email
us for more information or to place an order |
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Visit
our links page for contact details of all our agents
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