The manufacturing, testing, and deployment of Autoclaved Aerated Concrete in India are governed by four primary IS codes. Our manufacturing partners strictly adhere to this entire ecosystem.
The Core Specification: This is the master standard for Autoclaved Cellular (Aerated) Concrete Blocks. It dictates the acceptable nominal dimensions, compressive strength classes, and the strict dry density ranges (551-650 kg/m³) required for framed structural integrity.
Methods of Test: This code standardizes the laboratory testing methods. It outlines exactly how factories must measure compressive strength, calculate thermal conductivity, determine drying shrinkage, and verify water absorption rates before dispatching blocks.
Code of Practice for Masonry: This governs site execution. It provides the guidelines for architects and masons on how to construct AAC block masonry, including recommendations for polymer-modified thin-bed mortar over traditional cement-sand mixes.
Fly Ash Utilization: Since premium AAC blocks utilize up to 60-65% industrial fly ash, this code ensures that the pulverized fuel ash used as a pozzolana in the chemical mix is of pure, high-grade quality, directly influencing green building certifications.
The definitive technical data sheet for Grade 1 Autoclaved Aerated Concrete Blocks supplied through our pan-India distribution network.
| Technical Parameter | Standard Value (IS 2185 Part 3) | Client Benefit on Site |
|---|---|---|
| Oven-Dry Density | 551 to 650 kg/m³ | Massive reduction in structural dead load, saving TMT steel costs. |
| Compressive Strength | ≥ 3.0 to 4.5 N/mm² (MPa) | Ensures extreme durability and load-bearing capacity for framed buildings. |
| Dimensional Tolerance | L: ± 5mm | H: ± 3mm | W: ± 3mm | Enables the use of 3-4mm thin-bed chemical mortar, eliminating plastering waste. |
| Thermal Conductivity (K-Value) | 0.16 to 0.18 W/m·K | Superior insulation. Drastically reduces interior HVAC heating and cooling costs. |
| Fire Resistance | 2 to 4 Hours (Depending on thickness) | Non-combustible nature provides life-saving fire safety for commercial projects. |
| Sound Insulation (STC) | 38 dB to 45 dB (Depending on thickness) | Ideal for hotels, hospitals, and residential high-rises requiring acoustic privacy. |
| Drying Shrinkage | ≤ 0.04% | Prevents structural and plaster surface cracking post-construction. |