Light weight AAC Blocks

Shree Shakthi AAC Blocks

shreeshakathi1Autoclaved aerated concrete is a versatile lightweight construction material and usually used as blocks. Compared with normal (ie: “dense” concrete) aircrete has a low density and excellent insulation properties.

The low density is achieved by the formation of air voids to produce a cellular structure. These voids are typically 1mm – 5mm across and give the material its characteristic appearance. Blocks typically have strengths ranging from 3-9 Nmm-2 (when tested in accordance with BS EN 771-1:2000). Densities range from about 460 to 750 kg m-3; for comparison, medium density concrete blocks have a typical density range of 1350-1500 kg m-3 and dense concrete blocks a range of 2300-2500 kg m-3.

Autoclaved aerated concrete blocks are excellent thermal insulators and are typically used to form the inner leaf of a cavity wall. They are also used in the outer leaf, when they are usually rendered, and in foundations. It is possible to construct virtually an entire house from autoclaved aerated concrete, including walls, floors – using reinforced aircrete beams, ceilings and the roof. Autoclaved aerated concrete is easily cut to any required shape.

Aerated concrete blocks also have good acoustic properties and it is durable, with good resistance to sulfate attack and to damage by fire and frost.

Available Sizes

Dimensions* (mm)
Length (L) 600
Height (H) 200
Width (T) 50, 75, 100, 125, 150, 200, 225
(Size are available as per requirement and possibility of supply

Technical  Specifications

Density (over dry) 550-650kg/Cum
Compressive Strength 3 – 4.5 N/mm2
Resistant to Fire 4-6 hrs.
Sound Reduction Index 37-49 dB
Design Density 850 kg/cum.


Weather & Earthquake ResistantThe impact of earthquake forces on a structure is proportional to the weight of the structure. Being light weight and long-lasting, AAC Blocks provide excellent resistance to earthquake forces.
Long LastingAAC Blocks are resilient to water damage as compared to any other construction material. They can even withstand myriad climatic conditions, this in turn gives you increased value for your investment.
Environment FriendlyEnergy consumed in the production process of AAC is only a fraction compared to the production of other building material. The manufacturing process emits no pollutants and creates no by-products or toxic waste products. AAC is manufactured from natural raw material. The finished product is thrice the volume of the raw material used, making it extremely resource-efficient and environment friendly.
WorkabilityExtremely Light: AAC is upto 3-4 times lighter than traditional concrete, representing great advantages in transportation and material handling.
Cost Saving: Being 8 times the size of clay brick, AAC wall construction involves 1/3rd the joints, thus an overall mortar saving up to 66% and this in turn will bring about significant savings in steel i.e. up to 25% and concrete up to 10%.
Fast Construction: BAAC Blocks requires lesser number of joints, which result in saving jointing material, time and labour.
Work Efficiency: The automatic manufacturing process gives AAC Blocks an exceptional dimensional accuracy and smooth surface, allowing less thickness of plaster. AAC Products can be easily cut, Drilled and grooved with manual or power tools. This provides higher productivity in sanitary and electrical installations such as pipes or ducts.
Versatile: AAC Blocks ensures a smooth and accurate masonry profile and is also useful for renovation and alteration purposes.
Energy EfficientAAC is 100 % Green Building Material and is a walling material of a choice in LEED® certified buildings (ITC Centre, the highest rated green building has been built using AAC). It is energy and resource efficient in the sense that it uses least amount of energy and material per m3 of product. Unlike brick manufacturing process which uses precious top 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
Excellent Thermal InsulationAAC provides sound insulated interiors, keeping out warm air in summers and cold air in the winters. It also reduces air conditioning costs by 30% while providing the highest thermal rating in the industry.
Superior Fire ResistanceDepending upon thickness, AAC offers fire resistance for about 2 to 6 hours. The melting point of AAC is over 1600℃, more than twice the typical temperature in a building fire of 650℃.
Water & Moisture ResistanceThe structure does not allow for capillary action making it impervious to water. Its water resistance properties are further enhanced by adding silicon based additives. AAC possesses excellent structural integrity, resisting moisture penetration, whether caused by wind-driven rain or standing water. Additional moisture resistance is achieved with a final surface treatment such as plaster and paint, or cladding such as bricks and/or other exterior materials.
Pest ResistantTermites hate AAC! Being made of inorganic minerals it does not promote growth of mold.
Non ToxicAAC Block does not have any toxic substances nor does it emit odour. Its production, management and disposal do not represent any health risks or damage to the environment.

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