AAC Plant

Positive impact of AAC blocks on environment

• Light-Weight: AAC density is about one-fifth of that of normal concrete blocks, making it easily handled.
• Thermal Comfort and energy saving: AAC’s excellent thermal insulation properties result in improved comfort level and saves heating and cooling costs.
• Good Workability: AAC blocks can be sawn, cut, drilled, carved and nailed properly.
• Impact Resistance: AAC blocks can handle impact loads very effectively.
• Cost Effective: AAC blocks are cost effective in construction because of its bigger size and lighter weight as compared to other bricks.
• Fire resistance: AAC blocks have fire resistance capacity for 2 to 6 hours depending upon thickness. • Sound Resistance: It provide better sound insulation as compared to other building materials.
• Durable: History of usage dated more than 50 years protecting building envelope under extreme weather condition.
• Dimensional accuracy: AAC blocks can be cut to the tighter dimensional tolerances as compared to other blocks.
• Saves up to 25 % foundation cost.
• Greater wall installation speed as compared to other bricks.

Comparison between AAC Block and Clay Bricks

Sr.NoParameterAAC BlockClay Brick
1Structural CostSteel Saving Up to 15%No Saving
2.Cement Mortar for Plaster & MasonryRequires less due to flat, even surfaces & less number of jointsRequires more due to irregular surface and more number of joints.
3.BreakageLess than 5%Less than 5% Average 10 to 12 %
4.Construction speedSpeedy construction due to its big size, light weight& ease to cut in any size or shapeComparatively slow
5.QualityUniform & ConsistentNormally varies
6.Fitting & ChasingAll kind of fitting and chasing possibleAll kind of fitting and chasing possible
7.Carpet AreaMore due to less thickness of walling materialComparatively low
8.AvailabilityAnytimeShortage in monsoon
9.Energy SavingApprox. 30% reduction in air-conditioned loadNo such saving
10.Chemical CompositionSand/Flyash used around 60 - 70 % which reacts with Lime & Cement to form AACSoil is used which contains many inorganic impurities like sulphates etc. resulting in efflorescence

Criteria for measuring the impact of AAC Blocks on Environment.

1) Soil Consumption: No soil is used to produce the AAC blocks. It uses the Fly Ash as a raw material which is wastages of Thermal Power Plants. So there is no harm to the soil and no impact on soil pollution.
2) Fuel Consumption: One sqft of carpet area with AAC blocks will consume 1 kg of coal and One sqft of carpet area with clay bricks will consume 8 kg of coal. So it is more eco friendly than the clay bricks.
3) Consumption of cement mortar: AAC Uses 0.77 bags of cement / Cu.m as compared to 1.44 bags of cement/ Cu.m of clay bricks.
4) Energy Saving: Approximately 30% saving of energy for heating and cooling because of low thermal conductivity value.
5) Cost Benefits: Reduction in dead weight leading to savings in steel and concrete.

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