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Glass
fibre Reinforced Concrete (GRC) 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.
GRC
is not a single material but a family of materials with different
properties tailored to suit particular applications. The properties
of GRC vary with the production method, the amount and type
of glass fibre and the composition of the cementitious matrix.
The properties of Glass fibre Reinforced Concrete (GRC) 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 fibre
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 fibre 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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