AAC (Autoclaved Aerated Concrete) is a certified green building material. These precast concrete blocks are extremely lightweight and widely used for internal and external construction.

80% of the volume of an AAC block is air. The blocks are easy to install, nail, drill and cut for pipes and conduits and . We manufacture the AAC blocks in a variety of sizes. The raw materials we use to manufacture the AAC blocks are cement, sand, fly ash, gypsum, lime and water.

Renacon

Renacon

TECHNICAL DATA

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

45db for 200 mm thick wall

Thermal Conductivity

Low / 0.16 kelvin per meter

Colour

Light Grey

Renacon AAC

Blocks Per Cubic Meter

DIMENSIONS Blocks
100 MM (4 ") 83
110MM (4.5") 72
150MM (6") 55
200MM (8") 41
225MM (9") 37

Renacon AAC

Blocks Per Metric Ton

DIMENSIONS Blocks
100 MM (4 ") 117
110MM (4.5") 90
150MM (6") 76
200MM (8") 58
225MM (9") 52

Advantages

Of Renacon AAC Blocks

Renacon AAC blocks are ideal for all kind of structures such as schools, hospitals, hotels, offices, independent housing, apartments etc.,

  • ECO - Friendly

    Renacon AAC Blocks is designed for consumers who are environmentally conscious.

    • Reduces at least 30% of environmental waste
    • Consume less energy.
    • Greenhouse radiation decreased by 50%
    • Over 60% decrease in integrated energy on the surface of brick.
  • Lightweight

    AAC Blocks are lighter than traditional CLC bricks.                                

    • 50% lighter than CLC blocks
    • Easy and cheaper transportation.
    • Reduces overall dead load of a building
    • Ideal for construction of taller buildings.
  • Precision

    These blocks are known for their precision.                                                              

    • Available in perfect sizes.
    • Results in smooth walls.
    • Reduces cement and steel usage.
  • Design Flexibility

    AAC Blocks can easily fit individual requirements. These can also be installed after the main construction is complete.

    • Easy to cut, drill, nail, mill and groove to fit specific requirements.
    • Available in custom sizes that can be handled easily
    • Simplifies hydro-sanitary and electrical installations.
  • Faster- Construction

    Renacon AAC Blocks make construction easier and faster.                     

    • 20% reduction in construction time
    • Sets and hardens quickly.
    • Different sizes of blocks help reduce the number of joints in wall masonry.
  • Low Maintenance

    Building constructed using AAC blocks requires less maintenance. It requires less jointing and reduces need for cement and steel.

    • Overall construction cost reduces by 2.5%
    • Nil efflorescence effects hence wall painting and plastering last longer.
  • Long- Life

    The Autoclaved Aerated Concrete block have longer life span.                    

    • Not affected by extreme climatic conditions
    • Do not degrade under normal atmospheric conditions.
  • Termite/ Pest Resistant

    Porous structure of AAC blocks makes it termite resistant.                    

    • Aerated concrete cellular (ACC) block cannot be damaged or infested by termites and other pests.
    • Makes it ideal choice for flooring, roofing and walling solution.
  • Fire Resistant & Thermally Insulated

    Autoclaved lightweight concrete (ALC) Blocks is fire resistant and thermally insulated.

    • Can withstand up to 6 hours of direct fire exposure.
    • Excellent sound absorption property due to porous structure of blocks.
    • Reduces heating and air conditioning costs of a building as the air pores provide perfect thermal insulation.
  • Seismic Resistant

    These lightweight AAC blocks reduce mass structure of a building.                    

    • Decreases the impact of an earthquake
    • Non-combustible nature provides an advantage during earthquakes.
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Renacon Certificates and Comparison

Projects

Of Renacon AAC Blocks

Prof. A.R.SANTHAKUMAR
Former Dean (Civil Engineering)
Anna University and
Former Emeritus Professor, IIT Madras.

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Autoclaved Aerated Concrete Block is a viable replacement for conventional red clay bricks, which we normally use for our building construction. Red clay bricks are used for load bearing as well as for filler walls of RCC frames in high rise structures. There is considerable difficulty, of late in getting good quality bricks. In addition manufacture of bricks cause depletion of top soil and is considered environmentally unfriendly. Therefore we have recently looked for viable alternatives.

The alternative that we propose should be durable and have properties similar or Better than conventional bricks. The Autoclaved Aerated Concrete (AAC) block is a very timely introduction to the building industry, which fulfils the need for walls in buildings.

For a good product, it should be quality assured as per BIS standards. In case of AAC Block, IS code 2185: Part III: 1984, defines all the quality parameters. The adoption of AAC block in building construction will lead to the following advantages,
  • It reduces the load on the foundation and other structural components in a structure due to its self weight of 600 to 800 kg/cum, as compared with the self weight of brick masonry of 1900-2000 kg/cum.
  • Because of reduction in self weight, AAC block construction attracts, Less earthquake load.
  • The output of the mason will increase because of less number of joints.
  • The AAC block is thermally better and hence when adopted leads to less energy for air-conditioning
  • The AAC Block has better sound insulation properties, Due to its air voids presence
  • The AAC block is dimensionally more accurate as it is produced with wire cut technology in a certified factory.
  • The normal brick wall has considerably more joints, Due to small wall size of brick. On the other hand, Due to longer size, AAC block has less joints and Hence less mortar consumption.
  • The AAC Block, When built has both faces as fair faces, Unlike brick work, Which has only one face as a fair face? Hence if plastered, The thickness of Plaster for AAC block is much less compared to conventional bricks.
  • The AAC block is light, Has air voids and hence has better fire resisting property compared to red clay bricks.
  • The product being produced in a factory, Has uniform quality and hence is more durable.
  • The raw materials used for the production, Has been found to be eco – friendly, As very little cement is used. The use of fly ash in this venture, Makes us to Utilize a waste material from thermal plants.
  • The red clay bricks now available in many parts of India are Classified as Class A, class B and Class C bricks. The bricks available in South India are of much poor quality because of the type of clay available here. Therefore we are able to produce only Class C bricks, which accounts for a strength of about 30 to 40 kg/sqcm. This strength range of 35 to 40 kg/sqcm, and Hence is much better then undependable red bricks strength.
Based on all the above, I have no hesitation in recommending the use of AAC Blocks For building construction in the following areas of work, where usually red clay bricks are Now being used.
  • All Filling areas including in flat slabs and instead of brick bats in weathering course, over roof.
  • Partition walls in Load Bearing and Framed Structures.
  • Infill walls in Multistory Building Frames both internal and external walls.
  • Load Bearing masonry upto 2 to 3 storeyes.

By proper design, The use of Autoclaved Aerated Concrete ( AAC ) Block, Will result in economy on overall cost.

Mr. Moorthi

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