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AAC Blocks

AAC Blocks
AAC Blocks
Product Code : AAC
Product Specification

AAC Blocks

We are prominent supplier of Autoclaved Aerated Concrete (AAC) products. Our pre-casted lightweight ACC blocks are increasingly becoming building material of choice for architects, engineers, builders and home owners. Made primarily from fly ash, these are appreciated as 100% green solution and also offer an easy to install as these can easily be routed, sanded and cut to appropriate size.

Earthquake Resistant

Structures made from AAC are light in weight and absorb the shock well, hence these offer high resistance to earthquakes. In addition to these, it is also very effective in major storms. Results have proved that the concrete structure made with AAC can easily endure the wind loads of category 5 tropical storms. For these reasons, ACC is widely used in high seismic zones and storm prone areas.

Floor Space Area

As our ACC provide same strength in thinner exterior walls( 6" instead of 9" exterior walls). It offer more floor space area(about 3% to 5%) without loosing any strength when compared to wider concrete walls.

Cost Savings

As ACC is very light in weight is reduces the overall dead-weight of the building. This helps in reducing the requirement of steel(up to 27%) and cement requirement(up to 20%). Further, as our ACC blocks are 8 times the size of a normal brick, there are only 1/3 joints in comparison. Hence requirement of mortar reduces by 66%. Hence help in saving cement requirement to join two blocks together by 20%.

Moreover, manufactured using advanced technology, our blocks are very smooth surfaced and dimensionally accurate. This allows for final 6 mm skim coat (putty/ POP) to give smooth surface , thus eliminating the requirement of three coat of plaster walls paints.

Water Barrier

It does not allow capillary action and hence provide very effective water proofing in situation where structure are in consistent contact with water such as tanks walls. Water proofing can further, increased by adding silicone based additives.

Pest Resistant

Made of inorganic minerals, ACC is highly pest resistant and does not promote molds and termites.

Thermal Insulation

Our ACC blocks are highly acclaimed for high thermal resistance. With high thermal rating of R30, it provides effective insulation against hot summer and cold winter winds. Therefore, reducing the cost of air-conditioning costs by 30%.

 Fire Resistant

With high melting point of 1600oC , our ACC has fire rating of 4 hours. This is more than twice for regular buildings made of normal concrete, which have melting point of 650oC.

 Sound Proof

AAC wall has an excellent Sound Transmission Class (STC) rating of M and hence provide quite and soundproof interiors.

Energy Efficient

AAC is made using fly ash(up to 65%), which is waste material produced in thermal plants, unlike normal bricks which is made using upper layer fertile soil of agricultural land. That causes soil degradation as land is left barren and unfit for any type of vegetation. Thus ACC is 100% green building material & is a walling material of choice in LEED® certified buildings ( ITC Center, the highest rated green building has been built using AAC) AAC is most energy & resource efficient in the sense that is uses least amount of energy & material per m3 of product.

High Strength

Manufactured using high pressure steam-curing autoclaving process, our AAC have excellent strength to weight ratio, higher than even M 150 concrete, and far exceeds the Indian Building Code Requirements.

Weight List for Autoclaved Aerated Concrete Blocks



Sr. No.

Size in mm

Weight per Block (kg Appx)

1

625 x 240 x75

7.31 (kg Appx)

2

4

625 x 240 x100

9.75 (kg Appx)

3

625 x 240 x150

14.63 (kg Appx)

4

625 x 240 x200

19.50 (kg Appx)

5

625 x 240 x225

21.93 (kg Appx)

Weight of our different sizes Autoclaved Aerated Blocks.

(Weight as per Density 550-650 kg. per m3)

 

DO'S & DONT'S WITH AAC MASONRY:



Sr. No.

DO'S

DONT'S

1

Surface of AAC blocks to be joined with mortar is to be wetted with brush / cotton waste or with the help of a tray filled with 25 mm water

Do not soak AAC blocks in water

2

Use only compatible mortar 1:6 or 1:1:6 mortar ( 1 cement : 1 fly ash : 6 sand)

Do not use rich mortars

3

AAC masonry should be as per IS code 6041 (1985) and IS code 1905 (1987)

The mortar should not be spread much ahead of the actual laying of blocks.

4

Chases for services in AAC masonry should be as per IS code 1905 (1987)

Do not deviate from the norms of chase cutting specified in the code IS 1905 (1987)

5

Use electro mechanical rotary tool for chase cutting

Do not use chisel and hammer for chase cutting

6

Chases should be filled along with plastering and a layer of chicken mesh is to be embedded in the plaster over the width of the chase with proper over lap

Do not fill the chase up to the top surface of the masonry to have a key while plastering.

7

While storing AAC blocks, care should be taken to avoid of excess moisture

Do not expose the AAC blocks during rains or snow fall



 Quick Facts Autoclaved Aerated Concrete (AAC):

  • AAC Consists 80% air by volume, making it lightest available Walling Material (weighs 1/4" that of clay bricks)

  • Formed as a result of reaction of Aluminum on a proportionate blend of Lime, Cement & Flyash, the hydrogen gas that escapes creates millions of tiny air cells giving it a strong honeycomb like structure

  • It is further strengthened by High pressure steam curing in Autoclaves.

  • Invented in 1923, AAC now accounts for 40% of all construction in UK & 60% of all construction in Germany.

  • The rise in demand in India has been so phenomenal that in last 3 years the production has increased by almost 500%!

No wonder, AAC is termed as the Building Material Innovation of the Century!

 

Dimensions


mm

inch

Length (l)

625 mm

25"

Breadth (b)

240 mm

9.6"

Thickness (t)

75 / 90 / 100 / 125 / 150/ 200 / 225 mm

3" / 4" / 5" / 6" / 8" / 9"

Tolerance

+ 1%

     Other Custom size can also be made

     

     

Specifications

Parameter

Value

Density (Oven Dry)

550 - 650 kg/m3

Compressive Strength

> 3 N/mm2 (Mpa)

Shear Strength

0.6

Modulus of Elasticity

2040 Mpa

Coefficient of Thermal Expansion

8.1 x 10-6 K-1

Water Absorption (at equilibrium)

8.00%

Thermal Conductivity

0.16 w/m0K

Thermal Resistance (R value)

0.46 m2-0K//w

Drying Shrinkage

0.04%

Fire Rating

4 Hrs. (for 200 mm wall)

Sound Transmission Class Rating

44

 

STEEL SAVING CHART

BRICKS BUILDING







DIFFERENECE




SUMMARY


TOTAL KG


CONCRETE M3

NO. OF ITEMS

TOTAL KG



CONCRETE

STEEL



FOOTING

=

4,000.00


127

1

4000.00


FOOTING

32

1200



COL.FOOTINGTO FIRST

=

16,900.00


195

1

16900.00


COL

35

4700



GROUND BEAM

=

2,000.00


17

1

2000.00


TYCOL

0

7843



COL..5th. TO 6th.

=

2,413.00



11

26543.00


1STBM

0

600



1st SLAB BEAM

=

3,000.00



1

3000.00


TYP

0

7200



TYPICAL SLAB BEAM

=

3,300.00



12

39600.00



67

21543



1st SLAB

=




1

0.00



47x3000

21543X33



TYPICAL SLAB


=




12

0.00



201000

710919



LIFT


=




1

0.00


SAVING

9,11,919











92,043.00








STAIR


=




















SAY









ADDING FOR TERRACE SLAB





AREA CONSIDERED 25,000 SFT









92,043.00

NET SAVING 37/- PER SFT





















STEEL FOR ARCHITECTURAL PROJECTION IS NOT COUNTED.

COST OF BRICKS

CONSIDERING 9 BRICKS PER SQFT OF BUILTUP AREA



















9X3.0 = 27 RS/SFT






AAC BLOCKS BUILDING





COST OF AAC BLOCKS

CONSIDERING 0.53 BLOCK(4') PER SQFT OF BUILTUP AREA

SUMMARY


TOTAL KG


CONCRETE M3

NO. OF ITEMS

TOTAL KG



CONSIDERING 0.17 BLOCK(6') PER SQFT OF BUILTUP AREA

FOOTING

=

2,800.00


95

1

2800.00



0.53X63/-=33 RS/SFT




COL.FOOTINGTO FIRST

=

12,200.00


160

1

12200.00



0.17X95/-=16 RS/SFT




GROUND BEAM

=

1,600.00


17

1

1600.00



TOTAL COST 49/- RS /SFT




COL..5th. TO 6th.

=

1,700.00



11

18700.00

DIFFERENCE 49/- - 27/- = 22/- PER SFT




1st SLAB BEAM

=

2,400.00



1

2400.00









TYPICAL SLAB BEAM

=

2,700.00



12

32400.00


FINAL SAVING AFTER DEDUCTION OF DIFFERNCE 37-21 = 16/- PER SFT OF BUILTUP




1st SLAB

=




1

0.00





TYPICAL SLAB


=




12

0.00





LIFT


=




1

0.00













70,100.00






















 

 

Cost Comparison of Brick Masonry vs. AAC Block Masonry














Brick Masonry (4" wall)




Quantity

Rate/Unit

Amount



Bricks

500

4.5

2250



Mortar

2.25 Bags Cement

200

450




10 cft Sand

3000

300






750



Plaster

4 Bags Cement

200

800



2 sides @ 18-22 mm

16 cft Sand

3000

480





1280



Walling Cost



4280



Rate per sq. ft.



42.8















AAC Blocks Masonry (100 mm wall)




Quantity

Rate/Unit

Amount



Blocks

56

54

3024



Mortar

0.85 Bag Cement

200

170




4.25 cft Sand

3000

127.5






297.5



Plaster

2 Bag Cement

200

400



2 sides @ 8-10 mm

8 cft. Sand

3000

240





640




Walling Cost


3961.5




Rate per sq. ft.


39.62


 

 

 

Cost Comparison of Brick Masonry vs. Block Masonry














Brick Masonry (9" wall)




Quantity

Rate/Unit

Amount



Bricks

1000

3.5

3500



Mortar

5.5 Bags Cement

225

1237




22 cft Sand

2500

550






1787



Plaster

4 Bags Cement

225

900



2 sides @ 18-22 mm

16 cft Sand

2500

400





1300



Walling Cost



6587



Rate per sq. ft.



Rs. 65.87/-















Blocks Masonry (150 mm wall)




Quantity

Rate/Unit

Amount



Blocks

56

76.5

4284



Mortar

1.5 Bag Cement

225

337




6 cft Sand

2500

150






487



Plaster

2 Bag Cement

225

450



2 sides @ 8-10 mm

8 cft. Sand

2500

200





650




Walling Cost


5421




Rate per sq. ft.


Rs. 54.21/-












BRANCH OFFICE ADDRESS
Plot no - 24, 2nd Floor, Amardeep Complex,
Station Road, Bharuch.


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