AAC Blocks

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AAC Blocks Specification

Strength
3 4.5 N/mm

Density
650 Gram per cubic centimeter(g/cm3)

Type
AAC (Autoclaved Aerated Concrete) Block

Length
600 mm

Compressive Strength
3 - 4.5 N/mm

Water Absorption
< 25%

Porosity
High

Material
Sand, Fly Ash, Cement, Lime, Gypsum, Aluminium Powder

Usage & Applications
Walls, Partition Walls, Load-bearing & Non-load bearing Structures

Color
Light Grey

Cavity
Solid

Dry Density Grade
550 650 kg/m

Carbonation Coefficient
Low

Oftening Coefficient
0.88 0.92

Width
200 mm

Thermal Conductivity
0.16 0.24 W/mK

Drying Shrinkage
0.04 0.06%

Frost Resistance
Excellent

Method
Autoclaved

Thickness
75 mm, 100 mm, 125 mm, 150 mm, 200 mm

Moisture Content
5 12%

Weight
Lightweight (Approx. 16 18 kg per block)

Size
600 mm x 200 mm x (75/100/125/150/200) mm

Shape
Rectangular

AAC Blocks Trade Information

Payment Terms
Cash in Advance (CID)

Supply Ability
1000 Per Month

Delivery Time
7-10 Days

Main Domestic Market
All India

About AAC Blocks

AAC blocks are widely used in the construction of apartments and other residential projects, as well as industrial and commercial buildings such as hotels, offices, hospitals, and schools.

Apartments & Residential Projects
Commercial Buildings
Hotels & Offices
Hospitals & Schools
Industrial Facilities
Interior & Exterior Walls
High-Rise Structures

Technical Advantages of AAC Blocks

Structural Savings : Lightweight blocks reduce dead load and steel use. Precision shapes minimize plaster and lower overall cost.
High Strength: High-pressure steam curing delivers superior strengthto-weight ratio exceeding Indian building code standards.
Higher Flexibility: Easily cut, grooved, and shaped on site for faster installation and adaptable designs.
Faster Construction: Reduced weight and quick setting accelerate project schedules.
Green Building & Energy Saving: Supports LEED/GRIHA credits, lowers manufacturing energy, transport fuel, water use, and improves operational efficiency.
Installation Benefits: Easy cutting, drilling and conduiting with thin mortar joints for rapid installation.
Fire Resistant :Cellular structure withstands temperatures up to 1500 deg C and resists fire for 4-5 hours without toxic fumes.
Pest Resistant: Inorganic composition prevents termite and insect infestation.
High Acoustic Insulation: STC-44 rating provides 45-49 dB sound attenuation for improved indoor comfort.

AAC Block Technical Specifications

As per IS:2185 Part 3 (1984)

Parameter	Units	Value
Density (Oven Dry)	Kg/m2	551-650
Compressive Strength	MPa	4 N/mm2
Size Tolerance	mm	Length -/+ 5 Height & Width -/+ 3
Modulus of Elasticity	Mps	2040
Water Absorption	Kg/m2xh0.5	4-6
Thermal Conductivity	W/mk	0.16
Thermal Resistance	k/w	0.58
Drying Shrinkage	mm/m max	0.20 (0.04%)
Fire Resistance	Hrs	4 (for 200 mm wall)

Block Dimensions & Coverage

Dimension (LxHxB mm)	Blocks /m3	Wall Area /m3 (ft2)
600x200x10	83.33	107.6
600x200x125	66.66	86
600x200x15	55.55	71.7
600x200x200	41.66	53.8
600x200x230	37.00	47.8

Walling Material Comparison

PROPERTY	RED BRICK	CONCRETE BLOCK	AAC BLOCK
Material Composition	Top Soil	Cement + Water + Sand and Gravel.	Fly Ash + Gypsum + Lime + Cement + Aluminium powder
Water Absorption	High	Average
Pest & Termite	High	None	None
Dry Density	1800-2000 kg/m3	2500 kg/m3	550-650 kg/m3
Earth Quake Resistance	Low	Minimal (1-3%)	Highest in the category
Wastage due to Breakages	High 10 to 12%	Minimal (1-3%)	Minimal (1-3%)
Fire Resistance (6" wall)	2 hours	3 hours	4 hours.
Energy Saving	Low	Average	High (30% less electricity consumption on HVAC)
Thermal Conductivity (K value)	0.81 W/m K	2W/m deg K	0.16 W/m'K

Application of AAC Blocks

High-Rise/ Multi-Storey Buildings
Residential Housing
Hospitals & Institutional Buildings
Industrial Structures & Warehouses
Commercial Complexes & Offices

Superior Fire Resistance and Durability

AAC blocks offer exceptional fire resistance of up to 4 hours, making them a reliable choice for structures where safety is paramount. Their composition ensures resistance against frost and long-term durability, with a lifespan exceeding 50 years, which is ideal for all types of buildings.

Efficient Thermal and Sound Insulation

With thermal conductivity as low as 0.16 W/mK and sound insulation up to 45 dB, these blocks maintain comfortable indoor environments. High porosity and density grades between 550

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