Foam concrete (synonym cellular lightweight concrete) - definition and physical characteristics.
Foam concrete is a type of porous concrete. According to its features and uses it is similar to aerated concrete. The synonyms are: aerated concrete,lightweight concrete,porous concrete.
Foam concrete is created by uniform distribution of air bubbles throughout the mass of concrete. Foam concrete is produced by mechanical mixing of foam prepared in advance with
concrete mixture, and not with the help of chemical reactions. Foam is prepared in special device - foam generator and after that mixing in special mixer.
(For example machine Fomm-Prof consist from special mixer and foam generator mounting together).
Here we will look at the main feature of foam concrete and will compare it with other materials. Machines could produce foam concrete with different densities from
200kg/cub.m. to 1600kg/cub.m. Density 300-500 kg/m3 (19-38 lbs/ft3) Made with Cement / Foam Only. Foam concrete with this densities is used in roof and floor as insulation against
heat and sound and is applied on rigid floors (i.e. in itself it is not a structural material). It is used interspace filling between brickwork leaves in underground walls,
insulation in hollow blocks and any other filling situation where high insulating properties are required. Density 600-900 kg/m3 (38-56 lbs/ft3) Made with Sand, Cement / Foam.
Used for the manufacture of precast blocks and panels for curtain and partition walls, slabs for false ceilings, thermal insulation and soundproofing screeds in multi-level residential
and commercial buildings. Foam concrete of this density range is also ideal for bulk fill application. Density 1000-1200 kg/m3 (56-75 lbs/ft3) Made with Sand, Cement / Foam.
This material is used in concrete blocks and panels for outer leaves of buildings, architectural ornamentation as well as partition walls, concrete slabs for roofing and floor screeds.
Density 1200-1600 kg/m3 (75-100 lbs/ft3) Made with Sand, Cement / Foam. This material is used in precast panels of any dimension for commercial and industrial use, garden ornaments
and other uses where structural concrete of light weight is an advantage. Main features and characteristics of foam concrete: Water Absorption. Trials undertaken have shown that the
closed cell bubble structure produced GreenFroth protein foaming agent create a foamed concrete with very low water absorption. Higher the air content the higher the water absorption
figure with a fully submerged sample of a mid density (770kg/m3) foamed concrete absorbing just 13% of water by weight over a 10 day period. A dense concrete block submerged for the
same time absorbed over 50% of water by weight. Fire Resistance. Foam concrete is extremely fire resistant and well suited to applications where fire is a risk. Test have shown that
in addition to prolonged fire protection, the application of intense heat, such as a high energy flame held close to the surface, does not cause the concrete to spall or explode as is
the case with normal dense weight concrete.
Foam concrete advantages.
Common Information About Foam Concrete (Cellular Lightweight Concrete).Foam Concrete is normal concrete with bubbles of air inside. Therefore it has the same characteristics with
many additional advantages. CLC (foam concrete) blocks are used for building cottages, wall insulation in multistory buildings and internal partitions. Also CLC can be produced and
poured for floors and roofs on-site. In roofs it can be used because of very good insulating and lightweight. For floors CLC offers faster installation and a less expensive option
because of the flowing and self-leveling properties. CLC is easy to produce using our portable Fomm-Prof process machine. The ingredients are cement, sand, water and foaming agent
Foam Concrete is very long-lived material. After producing it in first 90 years it increases solidity. It does not decompose and is as durable as rock.
RESISTANCE TO COLD AND WARMTH
Foam Concrete is very effective isolating material. Buildings constructed from foam concrete are able to accumulate cold or heat, which allows to greatly minimizing conditioning or
heating expenses. It is ideal material for countries with hot and cold climate and it is successfully used in Australia, India, Malaysia, Canada, Sweden, Russia and other countries.
Foam concrete control air humidity in a room by absorbing and output of moisture during the day and night. Also in foam concrete houses is favorable average temperature during the day.
For example if in the night temperature is about 0 Celsius and in the day about +50 the average temperature in the house will be about + 19 Celsius.
Foam concrete blocks are lightweight, big sizes and high accuracy dimensions. It increases the construction speed for several times. Also it is easy to cut channels and holes for
electrical wiring, sockets, and pipes.
Foam concrete has a high property of acoustical absorption. If foam concrete pouring to floor or roof if fill all holes and caves in construction and this is also increase acoustic insulation.
Foam concrete does not produce any toxic substances and in its ecological compatibility is second only to wood.
Foam concrete is a high workability material, so it is possible to build various shapes of corners, arches, pyramids, which will attach beauty and architectural expressiveness to your house.
Foam concrete allow to save big money not only during living in the house, but during the construction the house too. It is cheaper to deliver, to build, to make foundation for this house,
to plaster, to drive a wires and sewerage tubes, to build various shapes of corners and arches.
SUPER FIRE RESISTANT
Foam concrete extremely fire safe. For example foam concrete used in special fire safe vault. Tests show that foam concrete 150 mm width can protect from fire for 4 hours.
Favorable combination of weight, volume and packaging makes foam concrete blocks convenient for transportation and allow use motor or railway transport.
VARIETY OF USAGE
Foam concrete use for producing construction blocks, thermal and acoustic insulation of roofs, floors, warming of pipes, production of collapsible blocks and panels of partitions in buildings,
as well as floors and basements foam concrete of higher density. So, if you have the equipment for producing foam concrete you can offer in the market various products and will have big competitor advantage.
Foam concrete in comparison with other materials.
When comparing foam concrete with other materials, one must keep in mind that:
it is ecologically clean, breathes, uninflammable.
easy to produce in steady-state conditions as well as on a construction site
is produced from components available in any region
its prime cost is low