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Autoclaved Aerated Concrete (AAC) Blocks

Autoclaved Aerated Concrete (AAC) blocks are a versatile, lightweight, and sustainable building material used widely in construction.

aac bricks
Product Detail

Product Description

1. Product OverviewAAC blocks, also known as Autoclaved Aerated Concrete blocks, are manufactured using a mixture of silica (sand or recycled fly ash), lime, cement, water, and aluminum powder. This combination undergoes autoclaving, a high-pressure steam curing process, which imparts superior strength and stability to the blocks. AAC blocks are renowned for their light weight, thermal insulation properties, and eco-friendliness, making them ideal for various construction applications, including residential, commercial, and industrial buildings.

2. Key Features

Lightweight: Significantly lighter than traditional concrete blocks, making handling and transportation easier.

High Strength: Despite their light weight, AAC blocks offer impressive compressive strength, suitable for load-bearing applications.

Thermal Insulation: Excellent thermal properties reduce heating and cooling costs, contributing to energy efficiency.

Fire Resistance: Non-combustible and can withstand high temperatures, providing enhanced fire safety.

Sound Insulation: The porous structure provides effective sound insulation, creating quieter indoor environments.

Eco-Friendly: Made from non-toxic ingredients and recyclable materials, minimizing environmental impact.


1. Physical and Mechanical Properties

Density: 500-700 kg/m³

Compressive Strength: 3.5-5.5 MPa

Thermal Conductivity: 0.10-0.14 W/(m·K)

Water Absorption: 20-30%

Fire Rating: Up to 4 hours

Drying Shrinkage: ≤0.6 mm/m

2. Dimensional Specifications

Standard Size: 600 x 200 x 100 mm, 600 x 200 x 150 mm, 600 x 200 x 250 mm (custom sizes available)

Thickness Options: 75 mm, 100 mm, 150 mm, 200 mm, 250 mm

3. Application Areas

Internal and External Walls: Suitable for both load-bearing and non-load-bearing walls.

Flooring and Roofing: Ideal for floor and roof panels due to their lightweight and insulating properties.

Acoustic Barriers: Effective in creating sound barriers in residential and commercial buildings.

aac blocks

Usage Instructions

1. Construction Guidelines

Masonry: Use appropriate adhesive or mortar to ensure strong bonding between blocks. Maintain vertical and horizontal alignment during construction.

Surface Finishing: AAC blocks can be finished with various plasters, paints, or tiles for enhanced aesthetics and protection.

Cutting and Shaping: Easily cut and shaped with standard tools, allowing for on-site adjustments and custom designs.

2. Storage and Handling

Storage: Store in a dry, covered area to prevent moisture absorption and maintain quality.

Handling: Handle with care to avoid damage. Utilize pallets and protective covers during transportation.

Market Potential

With the growing emphasis on sustainable and energy-efficient building practices, the demand for AAC blocks is on the rise. Their unique combination of strength, insulation properties, and environmental benefits makes them a preferred choice for modern construction projects globally.

Example Comparison: Common AAC Parameters vs. Custom Data


Common Value

Custom Data Provided


500-800 kg/m³

500-700 kg/m³

Compressive Strength

2.5-4 MPa

3.5-5.5 MPa

Thermal Conductivity

0.12-0.20 W/(m·K)

0.10-0.14 W/(m·K)

Water Absorption



Drying Shrinkage

≤0.8 mm/m

≤0.6 mm/m

autoclaved aerated concrete

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