Meghalite AAC Lightweight Blocks

Meghalite Blocks

Advantages of AAC Blocks

Light Weight

Presence of uniform air pockets in AAC blocks results in significantly less weight compared to the clay bricks. This leads to not only lower costs in transportation but also in lower dead weight of the structure and hence contributing to lower requirement for steel and cement in building the structure.

High Strength

AAC blocks have the compressive strength in the range of 3.0-4N/m2 compared to clay bricks that have just 2.5-3N/m2. The blocks can be efficiently used as a building material for hospitals, schools, high-rises and other structures.                                                                                                            

Cost Saving

AAC block weighs almost around 80% less as compared to the conventional red brick ultimately resulting into great reduction of deadweight. Further, the reduced deadweight results into reduction of the use of cement and steel which helps great in cost savings

Thermal Insulation (cooling)

High thermal insulating qualities. The thermal conductivity of the AAC blocks helps maintaining the inner temperature to be warm during the winters and cool during the summers which ultimately leads to savings in air conditioning load and consequently enhanced energy efficiency.

Sound Proof

The porous structure of the AAC blocks results into enhanced sound absorption. The Sound Transmission Class (STC) rating of the AAC blocks up to 45 db. Thus, AAC blocks have been the most ideal material for the construction of walls in auditorium, hotels, hospitals, studios, etc.

Faster Construction

As the AAC block is very easy to handle, can be easily used to cut and align the AAC. Moreover, the AAC blocks come with larger sizes and fewer joints. This ultimately results in faster construction work as the installation time is significantly reduced due to fewer amounts of blocks and the masonry amount involved is also lowered.

Fire Resistant

Depending upon the thickness of the Autoclaved Aerated Concrete (AAC) Blocks, they offer fire resistance from 2 hours up to 6 hours. These blocks are highly suitable for the areas where fire safety is of great priority.                                             

Earthquake Resistant

The light weight property of the AAC blocks results into higher steadiness of the AAC blocks in the structure of the buildings. As the impact of the earthquake is directly proportional to the weight of the building, the building constructed using AAC blocks are more reliable and safer.

Resistance to Water Penetration

The AAC products, because of their cellular and discontinuous micro structure are superior to the normal clay brick in resistance of water penetrability and thus the external surface of AAC walls provides superior resistance to moisture penetration than the traditional clay bricks.

Long Lasting

AAC blocks are highly superior in terms of the strength. Higher level of strength of these blocks gives higher stability to the structure of the building. AAC is manufactured from non-biodegradable materials, which neither rot nor attract mould, keeping interiors clean and durable.

Perfect Size and Shape

The process of manufacturing AAC Blocks ensures constant and consistent dimensions. Factory finished blocks provide a uniform base for economical application of a variety of finishing systems. Internal walls can be finished by direct P.O.P., thus eliminating the need of plastering.

Pest Resistant

Autoclaved Aerated Concrete (AAC) Block consist of the inorganic material in its constitution that helps preventing/avoiding termites, damages or losses.                                                                    

Technical Specification
Property Units AAC Block Clay Brick
Size mm 600 X 200 X (100 to 300) 230 X 75 X110
Compressive Strength N/mm2 Min 3 * 2.5 to 3
Normal Dry (Oven Dry) Density Kg/m3 551 to 650 * 1800 to 2200
Thermal Conductivity "K" W/m-k Max 0.24 * 0.81
Drying Shrinkage % Max 0.05% * -
Fire Resistance Hrs. 2 to 6(Depending on thickness) 2
Sound Reduction Index Db 45 for 200 mm thick wall -
* As per IS 2185 Part 3
Comparison between AAC Block and Clay Brick
Parameter AAC Block Clay Brick
Structural Cost Steel saving upto 15% No saving
Cement Mortar for
Plaster & Masonry
Required Less due to flat,
even surface and less number of joints
Requires more due to lrregular
surface and more number of joints.
Breakage Less than 4% Average 10 to 12%
Construction Speed Speedy construction due to its big size,
light weight and easy to cut in any size or shape.
Comparatively slow
Quality Uniform & Consistent Normally varies
Fitting & Chasing All kind of fitting and chasing possible All kind of fitting and chasing possible
Carpet Area More due to less thickness of walling material Comparatively Less
Energy Saving Approx. 30% reduction in air-conditioned Load No such saving
Chemical Composition Flyash used around: 65 to 68% which reacts
with lime and cement to form AAC
Soil used contains many inorganic impurities like
sulphate etc. resulting in efflorescence
Calculation Sheet
No of Pcs
(per m3)
Work in Sq ft. **
(per m3)
600 200 100 83.33 116.33
600 200 150 55.56 77.56
600 200 200 41.67 58.17
600 200 225 37.03 51.69
** Assumption: 12 mm Mortar Thickness

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