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.
| SR NO | PARAMETER | AAC BLOCKS | RED CLAY BRICKS |
| 1 | Size | 600x200x100-300 mm | 230x75x150 mm |
| 2 | Accuracy | Variation 1.5 mm (+/-) | Variation 5 mm (+/-) |
| 3 | Compressive Strength |
3-5 Mpa | 1.5-2 Mpa |
| 4 | Mortar Consumption per cum with 1:6 | 0.5 Bag of cement | 1.35 Bag of cement |
| 5 | Chemical Composition | Fly-ash is used approx. 60% which reacts with binders (lime and cement) to form AAC which is an inert material | Soil is used which contains many inorganic impurities like sulfates which result in efflorescence |
| 6 | CO2 Emission per square foot |
2.2 kg | 17.6 kg |
| 7 | Dry Density | 550-650 kg/m3 (Oven Dry) |
1900 kg/m3 |
| 8 | Fire Resistance | Up to 7 hours | Up to 2 hours |
| 9 | Cost-Benefit Factor | Depending upon project design, savings up to 20% in structural costs can be achieved due to reduction of dead load |
None |
| 10 | Energy Saving | Up to 30% savings can be achieved in heating and cooling costs due to excellent insulation | None |
| 11 | Plastering Material | Exceptional dimensional accuracy allows for a final 6 mm skim coat | Traditional 3 coat plaster is required |
| 12 | Breakages | 3% | 15% |
| 13 | Environmental Impact |
A green building product as there is no pollutant or discharge in the manufacturing process |
Erosion of fertile topsoil is a crime against nature |
Visit us: AAC Block Manufacturer in Goa and Andhra Pradesh , CONECC AAC BLOCKS
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