Complete Information of AAC Blocks or Bricks, Advantage, Test Report, Full Form, Manufacturing Process, Machinery Used, Comparison, Standard Size, Cost, Prices, Differences, Density, Autoclaved Aerated Concrete (AAC) block is a precast, lightweight and insulating green building product, Manufactures autoclaved aerated concrete (AAC) blocks, and panels that are noncombustible, fire-rated, inorganic, dimensionally accurate and durable, AAC Block manufacturers, AAC Block suppliers, AAC Block producers, AAC Block exporters, AAC Block,Autoclaved Aerated Concrete Block,AAC Block Making Machine offered comprise machines making use of raw materials like sand, fly ash as a raw material for making blocks,
ntroduction of AAC Blocks and Bricks
AAC = Autoclaved Aerated Concrete
AAC was founded in Sweden by an architect called A.J.Ericksson and is now being produced in more than 420 factories around the world. It is made from fine ground silica sand, Fly ash, Portland cement, Lime, water and aluminum powder. The production process is very carefully monitored to ensure a controlled consistency in the proportions and timing of all ingredients that are used in every batch.
The Autoclaved Aerated Concrete (AAC) material was developed in 1924 in Sweden. It has become one of the most used building materials in Europe and is rapidly growing in many other countries around the world.
Autoclaved Aerated Concrete is a Lightweight, Load-bearing, High-insulating, Durable building product, which is produced in a wide range of sizes and strengths.
AAC offers incredible opportunities to increase building quality and at the same time reduce costs at the construction site.
AAC is produced out of a mix of quartz sand and/or pulverized fly ash (PFA), lime, cement, gypsum, water and aluminum and is hardened by steam-curing in autoclaves. As a result of its excellent properties, AAC is used in many building constructions, for example in residential homes, commercial and industrial buildings, schools, hospitals, hotels and many other applications. AAC contains 60% to 85% air by volume.
AAC has a very porous structure which is characterized by "macro" pores. Macro pores are small air bubbles evenly distributed throughout the material. Therefore, absorption of water into the AAC material is minimal.
Environment Friendly - AAC is a non-toxic product which does not pollute the air, land or water. During the manufacturing process, waste from the cutting process is recycled back with raw materials and used again. During construction, there is virtually no waste generated. The energy consumed in the production process is only a fraction compared to the production of other materials. The manufacturing process emits no pollutants and creates no by-products or toxic waste products. AAC is manufactured from natural raw materials. The finished product is thrice the volume of the raw materials used, making it extremely resource-efficient and environmentally friendly.
Lightweight - One of the biggest features of AAC blocks is its light weight. These blocks possess a cellular structure created during manufacturing process. Millions of tiny air cells impart AAC blocks very light weight structure. Density of these lightweight blocks usually ranges between 550 – 650 kg/m³ making them lighter than water.
Perfect Size and Shape - The process of manufacturing AAC Blocks ensures constant and consistent dimensions. Factory finished blocks provide a uniform base for economical application of a variety of finishing systems. Internal walls can be finished by direct P.O.P., thus eliminating the need of plastering.
High Compressive Strength - The block has an average compressive strength of (3-4.5) N/mm³ which is superior to most types of light weight blocks, 25% stronger than other products of the same density.
High Resistance to Water Penetration - The AAC products, because of their cellular and discontinuous micro structure are superior to the normal clay brick in resistance of water penetrability and thus the external surface of AAC walls provides superior resistance to moisture penetration than the traditional clay bricks.
Standard Size Of AAC Blocks And Bricks
Technical Specifications of AAC Blocks
How to use Autoclaved Aerated Concrete (AAC) Block
The Autoclaved Aerated Concrete (AAC) material was developed in 1924 in Sweden. It has become one of the most used building materials in Europe and is rapidly growing in many other countries around the world.
Autoclaved Aerated Concrete is a Lightweight, Load-bearing, High-insulating, Durable building product, which is produced in a wide range of sizes and strengths.
AAC offers incredible opportunities to increase building quality and at the same time reduce costs at the construction site.
AAC is produced out of a mix of quartz sand and/or pulverized fly ash (PFA), lime, cement, gypsum, water and aluminum and is hardened by steam-curing in autoclaves. As a result of its excellent properties, AAC is used in many building constructions, for example in residential homes, commercial and industrial buildings, schools, hospitals, hotels and many other applications. AAC contains 60% to 85% air by volume.
Advantages of AAC Blocks
Fire Resistant - Depending upon the thickness of the Autoclaved Aerated Concrete (AAC) Blocks, they offer fire resistance from 2 hours up to 6 hours. These blocks are highly suitable for the areas where fire safety is of great priority.
Pest Resistant - Autoclaved Aerated Concrete (AAC) Block consist of the inorganic material in its constitution that helps preventing/avoiding termites, damages or losses.
Sound Proof - The porous structure of the AAC blocks results into enhanced sound absorption. The Sound Transmission Class (STC) rating of the AAC blocks up to 45 db. Thus, AAC blocks have been the most ideal material for the construction of walls in auditorium, hotels, hospitals, studios, etc.
Earthquake Resistant - The light weight property of the AAC blocks results into higher steadiness of the AAC blocks in the structure of the buildings. As the impact of the earthquake is directly proportional to the weight of the building, the building constructed using AAC blocks are more reliable and safer.
Faster Construction - As the AAC block is very easy to handle, manipulate and use ordinary tools for cutting the wood such as the drill, band saws, etc. could be easily used to cut and align the AAC. Moreover, the AAC blocks come with larger sizes and fewer joints. This ultimately results in faster construction work as the installation time is significantly reduced due to fewer amounts of blocks and the masonry amount involved is also lowered resulting into reduced time-to-finish.
Long Lasting - AAC blocks are highly superior in terms of the strength. Higher level of strength of these blocks gives higher stability to the structure of the building. AAC is manufactured from non-biodegradable materials, which neither rot nor attract mould, keeping interiors clean and durable.
Cost Saving - AAC block weighs almost around 80% less as compared to the conventional red brick ultimately resulting into great reduction of deadweight. Further, the reduced deadweight results into reduction of the use of cement and steel which helps great in cost savings.
Versatile - AAC Blocks have an attractive appearance and is readily adaptable to any style of architecture. Almost any design can be achieved with AAC.
Non-toxic - Autoclaved Aerated Concrete products do not contain any toxic gas substances. The product does not harbor or encourage vermin.
Thermal Insulation - AAC block has exceptional thermal insulating qualities. The thermal conductivity of the AAC blocks helps maintaining the inner temperature to be warm during the winters and cool during the summers which ultimately leads to savings in air conditioning load and consequently enhanced energy efficiency.
Moisture Resistance - Moisture from both external and internal sources can cause damage to buildings, therefore, moisture protection is a primary consideration.
External moisture sources include rain and water from the soil. Internal moisture, usually in the form of humidity, can cause condensation on the surface of the walls as well as condensation inside the wall itself.
Fire Resistant - Depending upon the thickness of the Autoclaved Aerated Concrete (AAC) Blocks, they offer fire resistance from 2 hours up to 6 hours. These blocks are highly suitable for the areas where fire safety is of great priority.
Pest Resistant - Autoclaved Aerated Concrete (AAC) Block consist of the inorganic material in its constitution that helps preventing/avoiding termites, damages or losses.
Sound Proof - The porous structure of the AAC blocks results into enhanced sound absorption. The Sound Transmission Class (STC) rating of the AAC blocks up to 45 db. Thus, AAC blocks have been the most ideal material for the construction of walls in auditorium, hotels, hospitals, studios, etc.
Earthquake Resistant - The light weight property of the AAC blocks results into higher steadiness of the AAC blocks in the structure of the buildings. As the impact of the earthquake is directly proportional to the weight of the building, the building constructed using AAC blocks are more reliable and safer.
Faster Construction - As the AAC block is very easy to handle, manipulate and use ordinary tools for cutting the wood such as the drill, band saws, etc. could be easily used to cut and align the AAC. Moreover, the AAC blocks come with larger sizes and fewer joints. This ultimately results in faster construction work as the installation time is significantly reduced due to fewer amounts of blocks and the masonry amount involved is also lowered resulting into reduced time-to-finish.
Long Lasting - AAC blocks are highly superior in terms of the strength. Higher level of strength of these blocks gives higher stability to the structure of the building. AAC is manufactured from non-biodegradable materials, which neither rot nor attract mould, keeping interiors clean and durable.
Cost Saving - AAC block weighs almost around 80% less as compared to the conventional red brick ultimately resulting into great reduction of deadweight. Further, the reduced deadweight results into reduction of the use of cement and steel which helps great in cost savings.
Versatile - AAC Blocks have an attractive appearance and is readily adaptable to any style of architecture. Almost any design can be achieved with AAC.
Non-toxic - Autoclaved Aerated Concrete products do not contain any toxic gas substances. The product does not harbor or encourage vermin.
Thermal Insulation - AAC block has exceptional thermal insulating qualities. The thermal conductivity of the AAC blocks helps maintaining the inner temperature to be warm during the winters and cool during the summers which ultimately leads to savings in air conditioning load and consequently enhanced energy efficiency.
Moisture Resistance - Moisture from both external and internal sources can cause damage to buildings, therefore, moisture protection is a primary consideration.
External moisture sources include rain and water from the soil. Internal moisture, usually in the form of humidity, can cause condensation on the surface of the walls as well as condensation inside the wall itself.
AAC has a very porous structure which is characterized by "macro" pores. Macro pores are small air bubbles evenly distributed throughout the material. Therefore, absorption of water into the AAC material is minimal.
Environment Friendly - AAC is a non-toxic product which does not pollute the air, land or water. During the manufacturing process, waste from the cutting process is recycled back with raw materials and used again. During construction, there is virtually no waste generated. The energy consumed in the production process is only a fraction compared to the production of other materials. The manufacturing process emits no pollutants and creates no by-products or toxic waste products. AAC is manufactured from natural raw materials. The finished product is thrice the volume of the raw materials used, making it extremely resource-efficient and environmentally friendly.
Lightweight - One of the biggest features of AAC blocks is its light weight. These blocks possess a cellular structure created during manufacturing process. Millions of tiny air cells impart AAC blocks very light weight structure. Density of these lightweight blocks usually ranges between 550 – 650 kg/m³ making them lighter than water.
Perfect Size and Shape - The process of manufacturing AAC Blocks ensures constant and consistent dimensions. Factory finished blocks provide a uniform base for economical application of a variety of finishing systems. Internal walls can be finished by direct P.O.P., thus eliminating the need of plastering.
High Compressive Strength - The block has an average compressive strength of (3-4.5) N/mm³ which is superior to most types of light weight blocks, 25% stronger than other products of the same density.
High Resistance to Water Penetration - The AAC products, because of their cellular and discontinuous micro structure are superior to the normal clay brick in resistance of water penetrability and thus the external surface of AAC walls provides superior resistance to moisture penetration than the traditional clay bricks.
Raw Meterial For AAC Block
- Cement,
- Fly ash and
- Lime
Standard Size Of AAC Blocks And Bricks
- AAC Blocks is available in length of 600mm, height of 200 or 250mm and thicknesses from 75mm to 350mm.
Technical Specifications of AAC Blocks
- Dimensional Precision +/- 2mm
- Precision in Size Variation 2mm (+/-)
- Compressive Strength 35kg to 40kg per Cm2 / 3.5 to 4.0 N/mm2 conforming to IS 2185/1984
- Fire Resistance 1600° Celsius for 6 hours for a block with 200mm thickness
- Density 600-650 kg/m3 (dry)
- Sound Reduction index (db) 45db for 200 mm thick wall
- Thermal Conductivity Low / 0.16 kelvin per meter.
- Colour Light Grey
How to use Autoclaved Aerated Concrete (AAC) Block
- Stacking -On dry and even surface to avoid Damage & contact with moisture
- Mortar For Masonry - AAC mortar mix or cement: sand(1:6)
- Wetting of Block Before Application - Dip in water & Lift immediately
- Mortar Thickness -Keep it limited to 10 to 12mm
- Coping Beam - Coping beam with 2 nos 8mm reinforcement After 1.2mts height
- Curing of Masonry Wall - Curing required only for mortar joint
- Cutting of Block - Use tool like hacksaw or rotary cutter
- Lintel support - Lintel support on full block
- Electric & Sanitary Chases - Chases to be grooved before plaster of wall
- Plaster - Minimum external plaster thickness.
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