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CLC is a version of lightweight concrete that is produced like normal
concrete under ambient conditions. It is produced by initially making a slurry
of Cement +Sand + Fly Ash
(constituting 26% - 34 % content) + water, which is further mixed
with the addition of pre-formed stable foam in an ordinary concrete mixer
under ambient conditions. The mixture is either poured or pumped into
assembled moulds of blocks or form-work of reinforced structural elements or
poured onto flat roofs or voids for thermal insulation or filling. The foam
imparts free flowing characteristics to this slurry due to ball bearing effect
of foam bubbles enabling it to easily flow into all corners and compact by
itself in the moulds/forms without requiring any kind of vibration or
compaction.
This Cellular Lightweight Concrete (CLC) can be
produced in a wide range of densities from 400 kg/m3 to 1,800 kg/m3
to suit different applications: -
Ø
The lower densities of 400 –600 kg/m3 are ideal for
thermal insulation applications. CLC’s fire,termite,water-proof-ness and
environment friendliness make it a far superior alternative to the commonly
used Thermocole, glasswool, woodwool etc.
Ø
The density range 800-1000 kg/m3 is utilized for
making pre-cast blocks (~500x250x200/100
mm) for non-load-bearing walling masonry in framed structures.
Ø
The CLC range from 1200kg/m3 (Crushing
strength 65 kg/cm2) to 1800 kg/m3 (Crushing
strength 250 kg/cm2) is structural grade material utilized for:-
(a)
In-situ casting of structural (load-bearing)
walls and roofs of low rise individual or group housing schemes. or
(b)
Manufacture of reinforced structural cladding or partitioning panels.
Or for
(c)
Making pre-cast blocks (~500x250x200/100
mm) for load-bearing walling masonry for low-rise buildings.
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