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Glass
Fiber Reinforced Concrete (GFRC) is a cement-based composite
material reinforced with alkali-resistant fibres.
The
fibres add flexural, tensile and impact strength and the resulting
material allows the production of strong yet lightweight products
used in architectural, civil engineering and many other applications.
GFRC
is not a single material but a family of materials with different
properties tailored to suit particular applications. The properties
of GFRC vary with the production method, the amount and type
of glass fibre and the composition of the cementitious matrix.
The properties of Glass Fiber Reinforced Concrete (GFRC) vary
according to the production method, mix design, and the type
and content of the alkali resistant Glass fibre:
1.
Traditional Hand Spray
can produce the highest strengths due to a high AR Glass Fiber
content, low water/cement ratio, long fibre length and planar
fibre orientation.
2.
Cast Premix
strengths are generally lower than those of the Traditional
Spray method due to lower AR Glass Fiber reinforcement contents,
higher water/cement ratios, shorter fibre lengths and 3-dimensional
fibre orientation.
3. Sprayed
Premix gives consistent mechanical properties similar
or higher than those obtained with vibration cast premix.
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