Product

AAC
BLOCKS
& IT’S
HISTORY

Austin AAC Block is a lightweight material produced by mixing silica rich material (sand or flyash), cement, lime, gypsum, aluminium powder and water. Aluminum powder reacts chemically with cement and lime to generate hydrogen gas, this gas escapes into the air towards the end of the procedure. It is this chemical reaction that lends AAC blocks their distinct honeycomb structure, lightness, and other insulation properties.

Having undergone necessary molding and mixing, these are further cured in an autoclave (subject to high heat and pressure) that imparts them the desired strength and durability.

AAC was perfected in the mid-1920s by the Swedish architect and inventor Dr Johan Axel Eriksson, working with Professor Henrik Kreüger at the Royal Institute of Technology. The process was patented in 1924. In 1929, the first autoclaved aerated concrete was produced in the Swedish town of Yxhult. “Yxhults Anghärdade Gasbetong”, gave birth a little later to one of the world’s trademarks for building materials, AAC Blocks, which went on to change the construction industry for good.

WHY CHOOSE AUSTIN
AAC

1. Very Lightweight

AAC blocks are comparatively lightweight than other types of building blocks. They weigh only one–third of clay bricks. They contribute to up to 20% structural savings by decreasing the dead load of the buildings. Due to this property, they are capable of reducing the damage caused to your construction during an earthquake.

2. Water Resistant

AAC blocks contain discontinuous air pores which do not allow water to pass through. AAC blocks do not absorb water like red bricks or clay brick, which absorb a lot of water due to their high capillary action. Since there is no seepage or moisture in the AAC blocks, they prevent nesting and growing of termites, mould and mildew.

7. High Strength

High pressure steam–curing autoclaving process gives AAC blocks unmatchable strength to weight ratio, higher than even M150 concrete, and far exceeds the Indian Building code requirements.

3. Earthquake Resistant

Earthquake forces on structure are proportional to weight of the building, hence light weight blocks show excellent resistance to earthquake forces. Regions of high seismic activities like Japan exclusively use AAC Blocks.

8. Very Cost-Effective

The use of AAC blocks reduces the construction cost significantly. As they are lightweight, dead weight of structures are reduced leading to reduced consumption of steel in the construction of a building. Smooth surface and bigger size of AAC blocks reduce consumption of plaster and mortar as well as decrease the installation time

4. Pest Resistant

With high precision ratio, AAC blocks provide solid wall construction and airtight interior, and they do not contain any organic ingredient hence making your home uninviting to pest, insects or rodents

9. Thermally Insulated

Highest thermal rating in the industry R30. Its cellular structure provides well insulated interiors, keeping out warm air in summers and cold air in winters. AAC Block reduces air conditioning cost upto 30%

5. Noise Pollution Resistant

With closed air pockets, AAC blocks can provide very good sound insulation/sound absorption with an STC(Sound Transmission Class) rating of 44. The sound absorption of untreated AAC surface is better than that of dense concrete.

10. Easy Procurement

Procuring AAC blocks is never tough. No matter what the season, the availability of AAC blocks is high. Unlike traditional clay bricks which are not easily available during monsoons as they are made in traditional kilns, AAC Block has no such seasonal restrictions. They are produced in autoclaves in factories which are unrelated and unaffected by the seasons.

6. Easy to Cut and Shape

AAC blocks have a cellular structure and are light weight. Due to this, they can be cut in any shape. The blocks can be easily hammered with nails or screws and are suitable to be drilled for installing electrical and plumbing lines

11. Dimensional Accuracy

The production process guarantees the accurate dimensions of the blocks. This allows for straight and plumbed walls resulting in less on-site trimmings and reduces the quantity of plaster, mortar and finishing materials required.