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AAC Blocks - Autoclaved Aerated Concrete Blocks
AAC Blocks - Autoclaved Aerated Concrete Blocks
AAC Blocks are lightweight, precast building materials made from a mixture of silica (sand), lime, cement, water, and an aerating agent. These blocks are widely used in construction due to their numerous benefits, such as energy efficiency, sound insulation, fire resistance, and ease of handling. Below are the typical specifications for AAC blocks.
Standard Size | 600 – 625 mmL x 200-300mmW x 150-250mmH |
Density | 500 kg/m³ to 800 kg/m³ |
Compressive Strength | 3 to 7 N/mm² depending on the grade and density |
Thermal Conductivity (λ) | 0.10 W/m·K to 0.35 W/m·K |
Water Absorption: | 25% to 30% |
Fire Resistance | up to 4 hours of fire resistance |
Sound Insulation | 40 to 50 dB |






