aac blocks Suppliers

Key Features of AAC Blocks

⦁ Lightweight autoclaved concrete block.
⦁ Reduces structural cost.
⦁ Quicken construction upto 30%.
⦁ Reduces foundation load of the building upto 30 %.
⦁ Steel and Cement saving by 18% & 12% respectively.
⦁ Exceptional thermal and acoustic insulation.
⦁ Green building product.

What are AAC blocks?

Blocks made of autoclaved aerated concrete (AAC) are strong and lightweight construction materials. Johan Axel Eriksson, a Swedish architect and inventor first conceived of and developed AAC blocks in 1924. AAC blocks are renowned for its ability to withstand fire, heat, and sound. These building materials are often lightweight, weighing just about 30% as much as the more popular red clay bricks, with air making up around 80–85% of their capacity.

Environmentally friendly

AAC blocks are extremely eco-friendly building materials owing to their composition and production technique. They are created using natural raw materials including sand, cement, lime, and aluminum powder, and contain no toxic chemicals or contaminants. When compared to typical clay bricks or concrete blocks, AAC blocks use less energy to manufacture, resulting in reduced CO2 emissions. Furthermore, AAC blocks are lightweight, lowering transportation costs and fuel usage during delivery. Their strong

Types Of AAC blocks?

AAC (Autoclaved Aerated Concrete) blocks are classified depending on density, composition, and intended usage. Some common forms of AAC blocks are:

  • Fire-resistant AAC blocks: These blocks are designed to have strong fire resistance qualities, offering increased protection against fire spread in structures and contributing to overall safety.
  • Lightweight AAC blocks:These blocks have a lower density, often between 500 and 800 kg/m³. They are appropriate for non-load-bearing walls, partition walls, and insulation applications.
  • Medium density AAC blocks: These blocks range in density from 800 to 1,200 kg/m³. They are appropriate for use in load-bearing walls, outside walls, and other structural applications that demand greater strength.
  • Dense AAC blocks: AAC blocks with a density of 1,200 kg/m³ are ideal for heavy-duty constructions including high-rises, industrial buildings, and infrastructure projects.
  • Thermal AAC blocks: These blocks are intended to provide superior thermal insulation characteristics, hence reducing heat transfer through walls and improving energy efficiency in buildings.
  • Soundproof AAC blocks: These blocks are designed to absorb sound and minimize noise transmission, making them excellent for usage in buildings with loud environments or where sound insulation is required.

    These are only a few of the most prevalent varieties of AAC blocks on the market, and manufacturers may provide modifications or specialized materials to fulfill specific project needs.

How are they made?

AAC blocks are often made with materials including lime, cement, sand, water, gypsum, fly ash, and calcium oxide (commonly known as quicklime). Towards the end of the process, aluminum powder chemically combines with them, causing hydrogen gas to release into the atmosphere. AAC blocks have a distinctive honeycomb structure, are lightweight, and have additional insulating qualities as a result of this chemical reaction.
These are then cured in an autoclave (exposed to high heat and pressure) after undergoing the appropriate moulding and mixing, which gives them the desired strength and durability.

What are the advantages of using AAC blocks?

AAC blocks are usually nine times bigger than regular clay bricks. This leads to improved construction efficiency and quality, as well as a considerable reduction in on-site expenditures for materials such as plaster and mortar. Best-in-class thermal insulation is important because it reduces the cost of heating, ventilation, and air conditioning.

AAC material is frequently utilized in the construction of residential buildings, healthcare facilities, schools, hotels, and other industrial and commercial structures due to its high standards for workability and flexibility.

Physical Properties

DENSITY IN OVENDRY CONDITION

COMPRESSIVE STRENGTH, Min

COMPRESSIVE STRENGTH, Min

THERMALCONDUCTIVITY IN AIR DRY CONDITION

kg/m3

N/mm2 (grade-1)

N/mm3 (grade-2)

W/m.k

451 to 550

2.0

1.5

0.21

551 to 656*

4.0

3.0

0.24

651 to 750

5.0

4.0

0.30

751 to 850

6.0

5.0

0.37

851 to 1000

7.0

6.0

0.42

For ready reference refer to the link below.

Technical Specifications

Property

Unit

Value

 Face Size##

mm

600×200/ 600×240/ 625×240/ 650×250

Thickness*

mm

75 | 100 | 125 | 150 | 200 | 230

 Dry Weight

Kg

5.25 | 7 | 8.75 | 10.5 | 14 | 16.10

Compressive Strength** (min)

N/mm2

3

 Normal Dry Density

Kg/m3

551-600

Thermal Conductivity

W/m-k

0.15

Sound Reduction***

db

37-42

Fire Resistance-load Bearing (200mm Thickness)

Hrs

4

Non Load Bearing (100mm thickness)

Hrs

4#

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