5) One should take care of glass fibre during mixing
with concrete. It should be not allowed to mix
more than 1 minute, otherwise it will be break to
tiny pieces, and it cannot be worked with.
GRC as a cladding material
Important points to be observed for GFRC to explained
below use in cladding of buildings are :
1) The materials have a good resistance for tension.
That is the reason why Glass fibre is chosen as
reinforcement for concrete. Right now, is used
mostly for cladding buildings, lining, sewer pipe,
shoulder of roads and etc...
2) Compatibility of glass fibre with concrete or
mortar helps us to use it easily in our daily project
especially for facade of buildings, as we said ARglass
fibre that have good resistance to alkalinity
that contains in cement (pH > 12.3) with high
level.
3) AR-glass fibre can control shrinkage cracks easily;
it shows this property particularly in cladding
purpose or rendering. Because of most important
thing in GRC it is water: cement ratio maximum
0.35, which helps to control the shrinkage and
bonding each other by glass fibre.
4) GRC can be used as alternative material of natural
stone, especially in those countries where stone is
less or unavailable. Also for those countries that
favour stone only, the cost is higher, but because of
less maintenance one can return back this money.
5) Changing GRC panel is very easy as compared to
other cladding because of making GRC by panel
and just installing on the site. Also if broken one
panel can be repaired or removed and a new one
can be put, but if stone or tile is broken, it is not
easy to change.