Product Description
Rs. 38

Magicrete AAC Blocks

What are AAC blocks?
Autoclaved Aerated Concrete (AAC) blocks are lightweight and durable building products. First conceptualized and invented by Swedish architect and inventor Johan Axel Eriksson in 1924, AAC blocks are particularly known for their fire, heat, and sound-resistant properties. Air being the major constituent (almost 80-85% by volume), these building products are typically lightweight, weighing only a third of the more common red clay bricks.

How are they made?
Common ingredients used in the production of AAC blocks include lime, cement, sand, water, gypsum, fly ash, and Calcium oxide (commonly known as quicklime). Aluminum powder reacts chemically with these and hydrogen 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.

What are the advantages of using AAC Blocks?
On an average, AAC blocks are 9 times the size of regular clay bricks. This translates to superior construction speed and quality, coupled with the formidable reduction of costs - on plaster and mortar - at the site. Importantly, best-in-class thermal insulation results in increased savings of Heating, Ventilation, and Air-conditioning (HVAC) costs.

Because of its high workability and flexibility standards, AAC material is widely used across the construction of residential buildings, healthcare facilities, schools, hotels, and other industrial/commercial structures

Features & Benefits
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Earthquake Resistant

Earthquake forces on structure are proportional to weight of the building, hence light weight blocks show excellent resistant to earthquake forces. Regions of high siesmic activities like Japan exclusively use AAC Fly Ash Blocks. It has been proven to withstand wind loads of category 5 tropical storms.

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Noise Pollution Resistant

With closed air pockets, AAC lightweight fly ash blocks can provide very good sound insulation/sound absorption with an STC(Sound Transmission Class) rating of 44. It can also be used as a sound barrier wall along busy roads. AAC wall has an excellent sound transmission class (STC) rating of 44. Result, virtually sound proof interiors.

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Water Resistant

Microscopic structure of lightweight block does not allow for capillary action making it impervious to water. Its water barrier properties are further enhanced by adding silicone based additives.

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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 reduces air conditioning cost upto 30%.

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High Strength

High pressure steam-curing autoclaving process gives AAC fly ash blocks unmatchable strength to weight ratio, higher than even M 150 concrete, and far exceeds the Indian Building code requirements.

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Fire Resistant

Its unique cellular structure provides excellent fire rating. Due to this cellular structure AAC fly ask blocks do not disintegrate even in fire. It is best in class in fire rating of 4 hours. the melting point of AAC fly ash blocks are over 1600 degree celsius, more than twice the typical temperature in building 650 degree celcius.

Technical Specifications
Density Oven Dry 550-650 kg/m3
Compressive strength 4N/mm2 (MPa)
Shear Strength 0.6 N/m2
Modulus of Elasticity 2040 Mpa
Coefficient of Thermal Expansion 8.1 x 10 -6 K -1
Water Absorption 8% (at Equilibrium)
Thermal Conductivity 0.16 w/moK
Thermal resistance 0.46 m2 - 0k/w
Drying Shrinkage 0.04%
Fire resistance 4 Hrs (for 200 mm wall)
Sound Transmission class rating 44db for 200 mm wall


Autoclaved Aerated Concrete (AAC) block is a precast, lightweight, and insulating green building product used as walling material and a replacement for bricks, CLC Blocks, etc. In addition, due to solid thermal insulation, AAC blocks also use special applications such as firewalls, sound walls, roof tiling, etc. Magicrete AAC Blocks manufactures these products at its state-of-the-art plant with the latest innovations under advanced technology in Surat under the Brand name "Magicrete AAC Blocks."

AAC blocks have been in use for more than 90 years across the Globe. Structures built over 85 years ago are still standing today. However, for India, this is an evolving product.

AAC was developed in 1924 in Sweden by an architectural science lecturer looking for alternate building material with properties similar to wood, such as good thermal insulation, solid structure and easy to work, etc., and having resistance against fire and termite.

Cement, Fly ash, and Lime are the critical ingredients for making Magicrete AAC Blocks. Their curing takes place under steam curing, known as Autoclave. Due to sustainable material envelope, these products are certified under the green rating system and help builders get credit points.

Yes. Magicrete AAC Blocks is an environmentally friendly construction material. Magicrete AAC Blocks products conserve and protect the earth's precious natural resources, unlike bricks which consume the topsoil. Magicrete AAC Blocks manufacturing occurs from fly ash, an industrial waste from a thermal power plant. During manufacturing, 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. Virtually no waste is generated during the wall installation, and this product consumes significantly less water. Magicrete AAC Blocks, a non-toxic product, does not pollute the air, land, or water during disposal. Due to its resource efficiency and material envelope, one can earn many credits in the green certification process such as LEED, GRIHA, etc.

Hand Grips help better handle and place blocks, which reduces wastage and faster completion of work. In addition, tongue issues & Groovesissues provide automatic wall alignment, thus eliminating the need to check plumb. It also reduces mortar consumption and provides an accurate wall with time and money savings.

1. Range of Products ● First AAC Company to provide complete walling solutions ● Grade 1 Material, 33% Higher Strength ● ISI Marked 2. World Class Infrastructure ● India's top 3 AAC players with 800,000 CBM annual installed capacity ● Strategically located within 250kms of major urban centers and thermal power plants ● Present in 14 states, top 30 Indian cities through more than 2000 retail outlets. ● You can achieve operational excellence through TPM as a strategic tool and SOP-driven systems. 3. Technology Driven ● SCADAI HMI ((Automation Rate) ● Automated Dispatch Module ● Quality Management Module ● CRM 4. Value-Added Services ● Freemasonry training and audits ● Online Test Report ● Just in time delivery for improved supply chain management ● Online order status monitoring with automated dispatch information ● Dedicated call center for customer complaints

Yes, Being lightweight (1/3rd weight of clay bricks), Magicrete AAC Blocks are highly recommended for high-rise buildings and help reduce the total dead load of the structure, which directly helps in structural savings up to 20%.

The strength of Magicrete AAC Blocks is as per IS: 2185-Part III which is absolutely safe and strong enough to use for any non-load-bearing walling applications.

Deflection of the beam, soil settlement to one side, the uneven placing of blocks during construction are some reasons for wall cracking. Other reasons are structural Movements due to Thermal Expansion or change in moisture content or moisture movement. To avoid such damage, you should delay the AAC blocks' use until equilibrium moisture content. For this purpose, AAC blocks must be stored 10-15 days before application. Cracks appear in all types of concrete, including clay brick. We can minimize these cracks by using some construction techniques and proper workmanship. Leveling of blocks should be accurate and must be checked using Spirit level, preferably of 2-meter length. The First Course of Blocks should have sufficient time to set, and you should provide at least 24 hours for this purpose. There should be enough time for the framed structure to cure and settle so that you can notice any change in design due to structural movement. There should be a Control Joint of 10 mm after every 3 meters from the bottom to the top of the wall. Control joint must get filled with resilient material or backer-rod, which are easier to compress. And seal with caulking. Expansion Joint Ties must be given after every 3rd course and placed between gaps of control joint. The bond beam must be passed every 1200 mm in height using reinforcement of two MS rods of 8 mm tied with 6-8 mm steel with a gap of 6" -9". The minimum thickness of the bond beam must be taken 3" with concrete cover 15-20 mm on sides. The bond beam must be discontinuous at the control joint. Steel rods must be embedded in columns 5-6 times their diameter and fixed using non-shrinkable high-strength grout. Take Cement: Sand ratio 1:4 as Mortar Mix for filling the bond beam. The reason to provide a bond beam is to give Stability and Strength to the wall. After every 3rd course, there should be wall ties between the block and Concrete column.

You can use AAC Blocks to construct all types of walls between two columns in framed structures like partition, curtain, balcony, and boundary walls.

Water Absorption Test @ 24-hour water immersion is not given in Standard of AAC Blocks IS-2185 Part-3. It is advised to test thermal insulating wall elements like AAC for Capillary water absorption. AAC is most superior for capillary water absorption compared to a conventional brick. Like Red Clay brick, AAC is not recommended in foundations and a damp environment, so a water absorption test is not applicable for AAC.

Due to different reasons, blocks may damage during transport or handling at the site. This can be used as half-cut blocks after size cutting. Indian Standard IS-2185 Part-3 Clause 8.1.1 allows slight cracks and minor chipping not larger than 25 mm and shall not be deemed grounds for rejection.

AAC Blocks are in different sizes. In Length 650, 600 mm. In Height 250,240,200 mm and in thickness 75,100,125,150,200,225 mm.

No, AAC blocks are not recommended in the Foundation, and where high dampness is there.

Since it is highly porous, its water absorption is higher than the Red Clay brick if immersed in water for 24 hours. So it's not recommended to use in specific applications like Foundation, sewer-hole, and concrete water tanks.

AAC has thermal insulating properties; its thermal conductivity is 1/5th of clay brick. So AAC conserves the heat for a more extended period and saves energy costs due to air conditioning or room heater.

Yes. IS-2185 Part-3 is the Indian Standard Specification for AAC Blocks.

No, AAC does not catch fire, and its fire Rating is 4 Hours for an 8-inch wall.

It would be best to have a Low Capacity compression testing machine of 250 KN and a Cutting Machine. High Capacity Machines of 2000-3000 KN are not recommended to use. Instead, follow the testing guidelines as mentioned in IS-6441 Part-5.

There is a difference between immediate density and oven-dry density. AAC blocks have certain moisture content in normal conditions, so their density is higher. Still, for testing purposes, we dry the sample at 105 °C for 4-5 days till constant weight is achieved, and then we obtain moisture-free density or dry density. Refer IS-6441 Part-1 for testing the oven-dry density

Autoclaved aerated concrete is highly durable. It does not rot or decay like wood or other organic materials. Also, it does not rust like metal. Termites and other pests do not eat it. AAC will not burn. The millions of tiny cells in AAC cushion buildings from the significant force, preventing progressive collapse. AAC has withstood earthquakes in Japan, the frigid temperatures of northern Europe, the harsh salt air of the French Riveria, and the hillside fires of San Francisco.

No. AAC construction provides a solid, monolithic wall system with an enclosed, non-connected cellular structure. Exterior finishes complement this structure, providing a healthy balance between moisture resistance and vapor diffusion. In addition, the positive pressure of the air conditioning system pushes water vapor out through the walls while preventing moisture penetration from the exteriors.

Yes, Being lightweight (1/3rd weight of clay bricks), Magicrete AAC Blocks are highly recommended for high-rise buildings and help reduce the total dead load of the structure, which directly helps in structural savings up to 20%.

Even though they appear to be similar, they are different products. CLC strength parameters are 25 kg per Whereas AAC block strength is 35 to 40kg per sq. cm. CLC cannot be cut with wires, and the edges are not accurate and easily damageable. The CLC is cured in conventional methods, and the AAC is ready for use with adequate strength at the post-production stage due to its advanced autoclaved curing process. Unlike AAC blocks, CLC blocks give rise to the release of toxic gases.

Yes. You can use Magicrete AAC Blocks for load-bearing structures up to 3 storeys.

No. Soaking and wetting of the AAC are not needed. Slight wetting is sufficient.

42 Magicrete blocks of 600 X 200 X 200 mm dimensions make a CBM.

Yes, we do. We manufacture and supply Magicbond adhesive for AAC blocks.

● Compressive Testing Machine (CTM) should permit reading of ultimate load with a maximum error of (+/-) 2.0 %. ● The load Rate should be 0.5 to 2 kg/ sq. cm so that failure occurs within 30 seconds. ● Drying Oven

● The specimen shall be oven dry at 105+/-5 degrees Celsius for 4 hours or could be repeated several times to achieve the moisture content of the sample to be 8% to 12% ● Specimen surfaces shall be equal to the pressure surface of CTM. ● The direction of load shall be perpendicular to the direction of the rise of mass during production. ● The loading rate should be 0.5 to 2 kg/ so that failure occurs within 30 seconds.

Magicrete AAC Blocks: Sizes: Magicrete AAC Blocks are available in following sizes / Thickness / Length & Heights: Standard Sizes of Blocks: Thickness: 75/100/125/150/200/225mm Length: 625/600 mm Height: 240 / 200 mm

● For 100 Sft. (9.29 Sq.m) masonry work / wall area = 63.15 i.e. 63 Nos. (For 240 mm Height Blocks) ● For 100 Sft. (9.29 Sq.m) masonry work / wall area = 72.52 i.e. 73 Nos. (For 200 mm Height Blocks) ● Blocks of standard size are to be provided considering cement mortar joint thickness of 10 mm.

● Light Weight ● Cost-Effective ● High Thermal Insulation ● Fire Resistance ● Acoustic Insulation ● Moisture, Pest, and Mold Resistant ● Earthquake Resistance ● Environment Friendly

Regular masons and labor can work on Magicrete AAC Blocks with minimal training. Standard masonry practices, which adhere to IS: 6041-1985 (for AAC Block masonry), are applied in Magicrete AAC Blocks masonry work. Care should be taken to ensure savings on mortar and plaster. Please refer to the best practices guide for further explanation.

It is vital to use the right tools to get maximum productivity and quality to get maximum benefit and have brilliant walls. (You may refer to IS: 6041-1985).

Magicrete AAC Blocks walls should be constructed with a much lesser mortar thickness. Thin bed mortars are ideal for this application. Since wall accuracy is far better with Magicrete AAC Blocks, plaster thickness also reduces.

As per IS:6041, in areas of moderate rainfall, there should be one coat of mortar (1:6 strength) application with a standard thickness of 10-12 mm. Thin bed mortars should be used for lesser thickness up to 3 to 4 mm.

AAC Blocks reduce the cost of construction to about 30%. It offers a large number of Smart Benefits. Magicrete AAC Blocks should be considered right from the design stage to maximize benefits. One gets a better quality wall with Magicrete AAC Blocks. Depending on resources, life cycle cost can even be lower with Magicrete AAC Blocks compared with clay bricks or CLC blocks.

Magicrete AAC blocks are very lightweight. For example, 100 X 200 X 600 mm block will have around 7.2 Kgs of weight compared to brick with a dimension of 75 X 115 X 230 mm, which weighs approximately 3.57 Kgs.

Yes, it is possible. Chasing lines can be done with proper hand or machine tools.

You can cut the broken blocks easily to the desired size, and if there is rubble, you can use it to fill in immersed areas.

Magicrete AAC Blocks finds its use in large walling applications across various segments such as Residential Buildings, Commercial Complexes and Offices, Hotels and Hospitals, Educational Institutes, Industrial Buildings, and infrastructures, etc. Due to solid thermal insulation, Magicrete AAC Blocks also find use in specialty applications such as firewalls, sound walls, roof tiling, etc.

In AAC, water does not pass through due to discontinuous air pores. While in red clay brick, due to high capillary suction, water penetrates through it.

Yes, IS-6041 (Code of Practice for Construction of Autoclaved Cellular Concrete Block Masonry). IS-6041: Code of Practice for Structural Use of Unreinforced Masonry.

We suggest you give a control joint after every three-meter interval, and the joint has to be filled with resilient material or backer rod and sealed with caulking.

Magicrete AAC Blocks is dispatched within 3-4 working days' time after confirmation of the order, and there is no seasonal variation in supplies.

Magicrete AAC Blocks are available in length of 600mm, the height of 200 or 250mm, and thicknesses from 75mm to 225mm. Please refer to technical specifications on our website or contact our marketing department for further information.

No, there is no seasonal impact on the manufacturing process throughout the year.

You can contact our marketing department on toll-free no 1800-274-5555, or you can also post your inquiry at our website ( or send mail at our info id. (

Yes, we provide

Well strapped on craters, the blocks are dispatched to various sites in Trucks with the necessary capacity.

Magicrete AAC Blocks are better than concrete blocks as they are lighter in weight (1/5th weight), have better thermal insulation (can save up to 20% energy), and have dimensional accuracy, leading to a more competent wall and savings of cement. Magicrete AAC blocks are much easier to work with as they can be sanded and cut easily.

Magicrete AAC Blocks offer immense Smart Benefits when compared to clay bricks. They are lighter in weight (1/3rd weight of clay bricks), have a more prominent size, have much better thermal insulation, and are earthquake resistant. In addition, walls built with Magicrete AAC Blocks are dimensionally accurate and help save time, space, steel, cement, water, labor, and above all, it helps protect our Mother-Earth. In totality, they are the intelligent choice for intelligent people.

CLC Blocks has almost double the weight of Magicrete AAC Blocks. Magicrete AAC Blocks are much more accurate, durable, and robust, and Autoclaving helps get a much more consistent product.