What Is AAC Blocks | Disadvantages & Advantages of AAC Blocks | Why AAC Blocks Get Cracks | AAC Blocks Technical Specifications | Uses of AAC Blocks

History of  AAC Block

What Is AAC Blocks?

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AAC Blocks Technical Specifications

Sr.No.DetailSizesUnits
1Size600 X 200 X Thicknessmm
2Thickness50,75,100,125,150,200,225mm
3Compressive Strength> 3 - 4.5 ( IS 2185 )N / mm2
4Normal Dry Density450 - 650Kg / m3
5Thermal Conductivity "K"0.16 - 0.18W / MK
6Thermal Resistance0.46K-m2 / W
7Heat Transmission Coefficient 'U'2.17W / m2k
8Drying Shrinkage0.04 % ( Size Of Block )%
9Sound AbsorptionUp to 42De
10Fire Resistance2 to 6Hrs.
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Uses of AAC Blocks

Disadvantages of AAC Blocks

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  • Cost
  • Crack in Walls
  • Nailing vs. Drilling
  • Installation During Rainy Weather
  • Brittle Nature
  • Attachments
  • Insulation Requirements
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Sr.No.DetailDisadvantages of AAC Block
1CostCost of production higher than the ordinary concrete block or brick.
2Crack in wallsWe need to take precautions to eliminate drying shrinkage cracks and stress concentration cracks.
3Nailing vs. Drilling If you need to fix furniture in the AAC Blocks wall, you need to use a drill bit and a raw plug. You can't just put a nail.
4Installation During Rainy WeatherAAC Blocks are known to crack after installation, which can be avoided by reducing the strength of the mortar and ensuring the blocks are thy during and after installation.
5Brittle NatureThey need to be handled more carefully than clay bricks to avoid breakage.
6AttachmentsThe brittle nature of the blocks requires longer, thinner screws when fitting cabinets and wall hangings and wood-suitable drill bits or hammering in.
7Insulation RequirementsIn newer building codes of northern European countries would require very thick walls when using MC alone.
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Advantage of AAC Blocks

Sr.No.DetailAdvantage of Block
1Structural SavingAAC blocks reduce the dead weight, which leading to reduce steel consumption in the construction of building due to its lightweight as well as its reduced the consumption of cement and mortar.
2Eco FriendlyIt produces at least 30% less solid waste than traditional concrete. There is a decrease of 50% of greenhouse gas emissions.
3 Cost-Effective• Reduces operating costs by 30P/0 to 40%.
4Acoustic InsulationAAC blocks offer unmatched acoustic insulation. Boost high sound absorption.
5Precision• Available in exact sizes.
6Light WeightAAC blocks are 3 times lighter than traditional bricks, making it easier to transport and reduce the construction time.
7Faster ConstructionAAC block cut down on construction time by 25 % due to its dimension, lightweight, and leas number of joints.
8Earthquake ResistantThe effect of earthquake is proportional to the weight of the structure.
9Water ProofMC blocks have a microscopic cellular structure of aerated pores, which has less water absorption property than regular bricks.
10High StrengthAAC Blocks have higher strength than regular bricks as compared to regular bricks due to steam curing at high pressure and high temperature.
11Workability and FlexibilityMC blocks can be cut easily, drilled easily, nailed easily, and grooved easily.
12Fire ResistantOwing to the unique cellular bee-hives like structure, the fire resistance quotient of AAC blocks is very high.
13Non-ToxicThere are no toxic gases or other toxic substances in autoclaved aerated concrete.
14Great VentilationThis material is very airy and allows diffusion of water. This reduces the humidity inside the building.
15Pest Resistant  / Anti TermiteWith the precision ratio of AAC Blocks being very high, it results in smooth finishing preventing pests.
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Why AAC Blocks Get Cracks?

  • What Is Dry Pack Mortar | Advantages of Dry Pack Mortar | Disadvantages of Dry Pack Mortar
  • What Is Unit Weight | What Is Density | What Is Unit Weight Material | Unit Weight Building Materials
  • What Is Hempcrete | Hempcrete Blocks | Advantages & Disadvantages of Hempcrete Blocks | Applications of Hempcrete
  • What Is Diversion of Headworks (Rivers) | Types of Diversion Headworks | Component Parts of Diversion Headworks (Rivers)
  • What Is Caisson Foundation | Types of Caisson Foundation | Advantage, Disadvantage, Application, & Construction of Caisson
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