Advantages of Using AAC Blocks in Construction Industry


AAC material was developed in Sweden in 1924 and is among the most used materials in construction in Europe and its use has been growing in other countries as well. It’s a lightweight and durable building product and can be produced in many strengths and sizes which gives it an added advantage over red bricks. AAC blocks (Autoclaved Aerated Concrete) are made from some of the basic materials including sand, cement, lime, and water, and with a little bit of rising agent.

Because of its unique qualities like fire, heat, and sound resistance, AAC makes for excellent Building Material. There are other qualities as well that make this the best building product to exist. In this article, we are going to explore the main advantages of AAC blocks in construction and their superiority over red bricks.

Top 7 Advantages of AAC Blocks in the Construction Industry

  • Long-Lasting

AAC blocks are known for their superior strength. This enables the construction companies to provide better stability to the building’s structure making it more trustworthy, stable, as well as earthquake resistant. One other noticeable thing is that the AAC material is produced using non-biodegradable materials making it more mold-resistance which means better, clean, and durable interiors.

  • Faster Construction

Since the AAC material is quite easy to manage and handle, the blocks produced using this material can be cut using everyday tools like drills, band saws, etc. This makes the construction easier, and resource-efficient as the manpower won’t require any special skills.

Also, the blocks produced using AAC material are 9 times larger in size than red clay bricks which ultimately means lesser joints in the building structure. This could directly impact the amount of time required to finish the construction. Not only that but this also means reduced the amount of masonry required which means the project is finished in lesser time, giving you more time to market and reach the right audience. This can also lead to a competitive advantage.

Overall, using AAC blocks reduces construction time by 20%.

  • Thermal Insulation

The AAC blocks are known for their thermal conductivity which allows the insides of the building to remain warm in the cold weather and cold in the hot weather. This directly impacts the amount of energy consumed from the use of air conditioning & saves up to 30% cost, making it a more energy-efficient choice over any other material.

  • Cost-saving

Fundamentally, the AAC blocks weigh much lesser than the traditional red bricks which can directly impact the amount of cement and steel used in the construction making it a more cost-saving option.

Since the process of manufacturing this material is automated, the outcome is more accurate and smoother blocks, eradicating the need to do three-coat plaster walls. The weight is 1/3rd to that of traditional red clay bricks structure, leading to steel usage reduction by 15% hence saving cost.

  • Sound and Fire Resistant

The sound absorption quality of AAC Blocks is excellent due to the porous structure of AAC Blocks at the time of manufacturing. AAC Blocks are the perfect solution for wall construction because the Sound Transmission Class (STC) is approximately 45 db.

The fire resisting quality of AAC Blocks is best in class with a fire rating of 4-6 hours. The cellular structure of the block makes it fire resistant with a melting point of over 1600 °C as opposed to the red clay bricks with a melting point of 900 °C.

  • Versatile

As mentioned in the introduction part, AAC blocks can be produced in any size, design, and strength to match the design of your building. Plumbing & chiseling becomes easier in AAC Blocks compared to red clay bricks & solid concrete blocks, making it a more versatile choice for builders as well as end users.

  • Environment Friendly

With the climate change issue being on the top of every millennial and some boomers as well, it has become imperative to reduce our carbon footprint wherever it’s possible. Using AAC blocks in construction is one such way of committing to a better future. AAC blocks are non-toxic and they produce no waster whatsoever during construction. AAC Blocks are constructed using 70% of fly Ash which is a national waste whereas Red clay bricks production consumes top layer soil making it less favorable condition for vegetation.

The production process uses a very less amount of energy comparatively. The process also doesn’t produce any pollutants or by-products or any toxic waste.

Lightweight, hence earthquake resistant

This we’ve already mentioned in the introduction part but this is one of the main advantages of using AAC blocks. They are lightweight with highest strength to weight ratio. The density of these AAC blocks ranges somewhere between 550 – 650 kg/m³ making them lighter in weight than water and poses a compressive strength of 4N/mm2

The lightweight property makes it an ideal choice for high seismic zones as less dead weight makes it more earthquake resistant.

All these advantages aka qualities put together make AAC blocks the choice of next-gen for construction. We won’t be wrong in saying that we’ll be seeing a lot of buildings and structures made using this material in the near future, and not just in Europe but all over the world. By 2025, AAC concrete’s market size will reach $25.5 billion with a CGAR of ~6%.

The driving factors of this growth is the rising demand for lightweight construction material and the movement towards green buildings. And we’ll be here witnessing the shift in the construction industry to AAC material.

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