Are AAC Blocks Strong?
AAC Blocks Have A Higher Compressive Strength.
Red clay bricks are made from a combination of clay (alumina), sand, lime, iron oxide, and magnesia, and are widely available throughout the country. AAC blocks are made from a mixture of fly ash, cement, lime, gypsum, and aeration agents and need development and production from specialized factories.
While red clay bricks are widely available, they do not provide superior compressive strength in comparison to AAC blocks, which are crafted to become more resilient to compression load. Red bricks have a compressive strength of 2.5 to 3.5 N/mm2, whereas AAC blocks have a compressive strength of 3 to 4.5 N/mm2.
CONECC AAC BLOCKS Vs RED BRICKS Vs CONCRETE BLOCKS
| Parameters | 
CONECC AAC Blocks | 
Concrete Block | 
Red Clay Brick |
|---|---|---|---|
| Fire Rating (150 mm) | 4–7 Hours | 3 Hours | 2 Hours |
| Eligible for Green Points (IGBC) | Yes | Depends on product | No |
| Sound Reduction Index (100 mm) | ≈45 dB | ≈41 dB | ≈40 dB |
| Thermal Conductivity | 0.11 - 0.16 W/m·K | ≈2 W/m·K | 0.80 - 1.0 W/m·K |
| Dry Density | 550–650 kg/m³ | 2400–2500 kg/m³ | 1600–1900 kg/m³ |
| Water Absorption | Low | Average | High |
| Installation Difficulty (MEP) | Low | High | Medium |
| Earthquake Resistance | Excellent (lightweight) | Moderate | Low |
| Size (L × H × W) | 600 × 200 × 75-300 mm | ≈350 × 200 × 200 mm | 230 × 75 × 150 mm |
| Pest & Termite Resistance | High | Average | Low |
| Energy Efficiency (Thermal Performance) | High (insulating) | Low | Low |
| Material Composition | Fly ash, cement, lime, gypsum | Cement, sand, gravel | Top soil |
