Pravin Buildtech AAC Block Manufacturer


about aac
aac features
aac advantages
Cost Analysis
Technical Specification

Advantages of AAC Block

Thermal Insulation

Highest thermal rating in the industry R30! Thus provides well insulated interiors, keeping out warm air in summers and cold air in winters. AAc reduces air conditioning cost by 20%.

AAC provides superior thermal insulation due to its cellular structure and results in substantial power savings where air conditioned needs is necessary.

Environmentally Sound

AAC is manufactured with abundant Fly ash (which makes it a green Product), unlike traditional clay bricks which uses the fertile top soil which was otherwise used for Agriculture. Manufacturing of AAC blocks produces no waste products or pollution. Its manufacturing enquires little energy as compared to other materials for walling.

Go-Green Nature

Least carbon footprint with a potential offset of 0.8 tonne CO2 per m3. In India itself AAC has potential to avert 200mn tones of CO2 emissions into environment – a saving of $20 bn every year. A Green Building material – contributes to LEED rating.

Earthquake Resistant

Earthquake forces on structure are proportional to the weight of the building, hence AAC shows excellent resistant to earthquake forces. Regions of the seismic activities like exclusively use AAC. It has been proven to withstand wind loads of category 5 tropical storms.

Energy Efficient

AAC is 100% green building material & is a walling material of choice in LEED certified buildings (ITC centre the highest rated green building has been built using AAC) It is most energy and resource efficient in the sense that it uses least amount of energy & material per m3 of product.

Unlike brick manufacturing process which use precious layer too-layer agricultural soil, AAC uses fly ash (65% of its weight), thus provides the most constructive solution to the nation’s fly-ash utilization problem.

Fire Resistant

Its unique cellular structure provides excellent fire rating. Due to this Cellular structure AAC blocks do not disintegrate even in fire. It is best in class fire rating of 4 hours. The melting point of AAC is over 1600 degree Celsius, more than twice the typical temperature in building fire 650 degree Celsius.

Pest Resistant

With solid wall construction and finishes, there are fewer if any, cavities for insects and rodents to dwell in. Termites and ants do not eat or nest in AAC.

Being made up of inorganic minerals, it does not promote growth of molds.

Water Barrier

Its structure does not allow for capability action making it impervious to water. Its water barrier properties are further enhanced by adding silicone based additives.

High Strength

High pressure steam-curing autoclaving process gives AAC unmatchable strength to weight ratio, higher than even M 150 concrete, and far exceeds the Indian building Code Requirements.

Cost savings

Being light weight AAC drastically reduces the weight of the building. Resulting into reduction in steel (up to 27%) and cement (up to 20%) structural cost savings.

Being 8 times the size of a clay brick, AAC wall construction involves 1/3rd of the joints, thus an overall mortar savings up to 66%.

Its automatic manufacturing process gives AAC an exceptional dimensional accuracy & smooth surfaces, eliminating need of three-coat plaster walls and allows for a final 6mm skin coat (putty/pop).

Floor Space Area

Use of thinner blocks (6” instead of 9” exterior walls) because of its excellent water barrio & insulation properties leads to an increase in floor space area between 3-5%.


Ease of working

AAC can be drilled, sawed, nailed, and chiselled. Basically, one may work Autoclaved Aerated Concrete like wood, using wood working tools.

Long Lasting

AAC being steam cured above 220 Deg C and at 14 kg /cm2 pressure becomes inert and does not have any effect of water damage or weather damage on it.

Versatility of usage

Unlike standard concrete, AAC yields readily without chipping or cracking.

Faster Construction

AAC's advantages in construction is its quick and easy installation since the material can be routed, sanded and cut to size on site using standard carbon tip band saws, hand saws and drills.

Light Weight

It weighs approximately 1/3 of the weight of normal walling materials. AAC provides significant benefits where weight is a concern in building design. AAC is the perfect material for renovations. It causes dead weight reduction of the building and hence the reduction in structural costs.

Acoustic Properties:

With its closed air pockets, AAC can provide very good sound insulation/ sound absorption with an STC (Sound Transmission class) rating of 44. It can also be used as a sound barrier wall along busy roads.

Sound proof

AAC wall has an excellent Sound transmission Class ( STC) rating of 44. Result virtually sound proof interiors.

  • AAC consists 80% air by volume, making it lightest available Walling Material (weighs 1/4th that of clay bricks).
  • It was formed as a result of reaction of Aluminum on a proportionate blend of Lime, Cement & Flyash; the hydrogen gas that escapes creates millions of tiny air cells giving it a strong honeycomb like structure.
  • It is further strengthened by High pressure steam curing in Autoclaves