Magicrete AAC blocks are made from fly ash, gypsum, lime, cement and aluminium powder and strengthened by high-pressure steam curing in autoclaves; about 80% of the volume is air. A 150 mm wall gives a 4 hour fire rating, and the blocks weigh about 1/3 of clay bricks. 600 mm blocks are available at the Navsari and Wada units, and 625 mm blocks at the Jhajjar unit.

Key features

• Weighs 1/3rd of clay bricks
• steel structure reduction up to 15%
• 4X faster construction
• High thermal insulation: up to 30% saving on AC / electricity cost
• Honeycomb structure gives high strength to weight ratio
• Fire rating of 4 hours for 150 mm thickness
• Sound reduction index more than 40 dB
• Up to 15% saving in foundation cost
• thinner 75 mm internal walls can increase floor space up to 2%
• Easy to chisel, cut and core

Applications

• Wall construction (internal and external)
• High-rise residential and commercial buildings

Specifications

Density (Oven Dry): 550-650 kg/m3 | Compressive Strength: 4 N/mm2 | Modulus of Elasticity: 2040 N/mm2 | Coefficient of Thermal Expansion: 8.1 x 10^-6 K^-1 | Water Absorption (at equilibrium): 8% | Thermal Conductivity (K value): 0.16 W/(m.K) | Drying Shrinkage: 0.04% | Fire Resistance: 4 Hrs (for 150 mm wall) | Sound Transmission Class Rating: 43 dB (for 100 mm wall) | Dry Density (comparison table): 550-650 kg/m3 | Wastage due to Breakages: Minimal (1-3%)