cellular light weight concrete presentation
TRANSCRIPT
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PRESENTED BY
S.BHARATHI
P.K.S.NANDHINI
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Lightweight concrete can be prepared either by injecting air in
its composition or can be achieved by omitting the finer sizes
of the aggregate or even replacing them by a hollow, cellular
or porous aggregate.
i ) No-fines concrete
ii) Lightweight aggregate concrete
iii) Aerated/Foamed concrete
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NO FINES CONCRETE
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Produced with the help of a Foam Generator by using a
foaming agent.
It contains isolated air bubbles, which creates million of
unconnected tiny voids or cells in the mix.
Wide range of controlled densities from 400 kg/m3 to 1,800kg/m3.
The density recommended is 1kg/m3 for blocks and 1.2 kg/
m3 for prefab elements and walls cast in-situ.
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Thermal properties
Sound insulation
Fire and vermin resistance
Durability and moisture resistance
Toxicity and Breath-ability
Sustainability
Build ability, availability and cost
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1. One mouldone block 2. Cutting by wire 3. Cutting by saw blade
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Heavy concrete tiles
Leyco tiles
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It is being used long timeago as a conventional,
simple and economical
solution for buildings
roofing. The practical experience
shows a number of
disadvantages related to
using the conventional
Concrete tiles for roofing.
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It is one of the newlyproduced materials used
instead of the Concrete tiles.
The most ideal solution for
roofing in Iraq and theMiddle East where
temperature varies
extremely.
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The area to which highperformance cellular concrete
can be applied in the
development of light weight
binary density insulatingcontrol panel system
Product consideration of future
generation in new building
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Optimum thermal insulation
Substantial weight reduction
Highly increased fire rating
Maximum sound absorption
Fast progress in construction
Saving in raw material
Savings in steel reinforcement in high rise
Savings in transportation
Savings in craning
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Very sensitive with water content in the mixtures
Difficult to place and finish because of the porosity and
angularity of the aggregate.
In some mixes the cement mortar may separate the aggregate
and float towards the surface
Mixing time is longer than conventional concrete to assure
proper mixing
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As reinforced load-bearing in-situ walls and roofs in LowRise Buildings.
Even block-work can also be used for load-bearing low rise
constructions.
Non load-bearing internal or external walls in High Rise
Buildings.
Thermal Insulation of building roofs and walls & roofs of cold
storage.
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