Aerated Autoclaved Concrete – AAC Blocks


  • Size: 600mm x 200mm x 75mm, 600mm x 200mm x 100mm, 600mm x 200mm x 150mm, 600mm x 200mm x 200mm, and 600mm x 200mm x 250mm.
  • Density: 400 kg/m3 to 800 kg/m3.
  • Compressive Strength: 3 to 7.5 N/mm2.
  • Thermal Conductivity: 0.09 to 0.20 W/mK.
  • Fire Rating: of up to 4 hours.
  • Sound Insulation: 35 dB to 45 dB.
  • Moisture Absorption: 5% to 10%.

Salient Features

  • Lightweight, high strength.
  • Thermal Insulation, fire resistant.


AAC blocks, or Autoclaved Aerated Concrete blocks, are a type of lightweight precast building material that is made from cement, water, sand, and a small amount of aluminum powder. The mixture is then poured into molds and allowed to cure and harden through a process of autoclaving, which involves exposing the blocks to high-pressure steam.


  • Load-bearing Walls.
  • Non-Load-bearing Walls.
  • Roof and Floor Panels.
  • Fire-rated Walls.
  • Soundproofing.
  • Landscaping.

Standards and Certifications

  • ASTM C1386
  • BS EN 771-4
  • IS 2185 – Part 3
  • DIN 4165
  • AS 5146
  • Indian Green Building Council (IGBC) – GreenPro Certification:
  • Bureau of Indian Standards (BIS) Certification

Also check out Cement Paver / Interlocking Pavement Blocks and Concrete / PVC Cover Blocks.