OM ECOLITE AAC (Autoclaved Aerated Concrete) blocks are lightweight building blocks manufactured by a precise controlled reaction of aluminium on lime, cement & fly ash which releases hydrogen gas through the millions of miniscule air cells which result in a very strong cellular structure but that reduces it weight. Curing in under high-pressure steam further enhances its strength resulting in a block that has high compressive strength but its own weight being low doesn’t add to the dead load of the structure being constructed. This makes it the ideal building block.

AUTOCLAVED AERATED CONCRETE (AAC) blocks are not FLY ASH BRICKS
but a completely different & advanced product.

SL NO.

Parameter

AAC Block

Fly Ash Bricks

Red Clay Bricks

1.

Size (LxHxB)

600x200x100-225 mm

225x100x75 mm

200x100x100 mm

225x100x75 mm

200x100x100 mm

2.

Variation in Size

1-2 mm

5 – 10 mm

5 – 10 mm

3.

Dry Density

500 – 650 kg/m3

1800 – 2000kg/m3

1800 – 2000 kg/m3

4.

Compressive Strength

40 – 55 kg/cm2

50 – 100 kg/cm2

25 – 75 kg/cm2

5.

Cost Benefit Factor

Reduction in dead weight leading to saving in steel & concrete

None

None

6.

Saving in Mortar

due to less number of joints

None

None

7.

Saving in Labour

Reduced by upto 50%

compared to clay bricks

Increases the time taken to construct

Increases the time taken to construction

8.

Energy Saving

32% (App) Air-condition load both heating and cooling will come down

No Savings

No Savings

9.

Contribution to Carpet Area

Increases by 2-3 %

No Savings

No Savings

10.

Sound Reduction

45db For 200 mm thick wall

Not applicable

Not applicable

11.

Thermal Conductivity

Approx 0.21-0.24 W/m K

Approx 1.05 W/m K

Approx 1.35 W/m K

12.

Earthquake Benefits

Yes

No

No

13.

Wastage

Upto 1%

Upto 10%

Upto 10%

14.

Quality

Consistent

Inconsistent

Inconsistent

15.

Supply

Can supply 24x7x365 days

Seasonal Effect

Seasonal Effect

16.

Fire Resistance

Upto 6 hours for 200mm thickness

2 Hour

2 Hour

17.

Basic Raw Material and

Cement, Lime, Aeration

Flyash, Gypsum, Quarry

Top Soil, Sand and

Inputs

Compound, Fly Ash

Dust, Lime

Lime water

18.

Production Process & Set – up

Produced only in organized

Unorganized Plant

Can only be produced

near river needed huge

amount of water for

production

plant equipped with steam

boiler and autoclaves

19.

Curing

Done in controlled way by Autoclaves with high pressure steam; ready in 12 hours

Requires huge amount of water for curing in open 7-10 days

Done in chimney polluting the atmosphere drastically

20.

Eco-friendliness

Pollution free process that

utilize fly ash as major raw

material

Pollution free process but utilizes lesser percentage of fly ash

Pollutes the atmosphere and also removes off the top soil