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CLC Blocks Technology

Cellular Light Weight Concrete (CLC) is a version of lightweight concrete that is produced like normal concrete under ambient conditions. It is produced by initially making slurry of Cement + Sand (optional) + Fly Ash (constituting 26% - 34 % content) + water, which is further mixed with the addition of pre-formed stable foam in an ordinary concrete mixer under ambient conditions.

The mixture is either poured or pumped into assembled moulds of blocks or form-work of reinforced structural elements or poured onto flat roofs or voids for thermal insulation or filling. The foam imparts free flowing characteristics to this slurry due to ball bearing effect of foam bubbles enabling it to easily flow into all corners and compact by itself in the moulds/forms without requiring any kind of vibration or compaction. This Cellular Lightweight Concrete (CLC) can be produced in a wide range of densities from 400 kg/m3 to 1,800 kg/m3 to suit different applications: -.

The specific strategic objectives are:

 
 

CLC Blocks Technology

ADVANTAGES OF USING AAC BLOCKS

1. AAC Block making plant Consumes Fly ash, which is a big problem for thermal power plants to dispose. It is environment friendly, because of no need of burning.

2. Higher strength, best thermal insulation & excellent sound absorption, vibration resistance compared to red bricks. The AAC product's lightweight and easy workability means that is very quick to install on site and transportation with lesser brakeage.

3. AAC blocks made walls can be left exposed (without Plaster) and gains strength over time. It saves structural cost by 35% and recycling of breakage, rejects also

4. AAC products are not affected by harsh climatic conditions and will not degrade under normal atmospheric conditions.

5. AAC Block does not have any toxic substances or emit odors. Its production, management and disposal do not represent any health risks or damage to the environment. Its production process develops non-toxic gases.

6. AAC blocks are bigger in size then conventional bricks, resulting in lesser number of joints. Less joints result in lesser quantity of mortar required, resulting in saving of mortar.

 

TECHNICAL COMPARISON

PARTICULARS

CONVENTIONAL RED BRICKS

AAC BLOCKS

Strength

30-40 Kg/cm3

35-40 Kg/cm3

Shape & Size

Non Uniform & Irregular

Uniform & Regular

Water Absorption

40 – 45 %

15 – 20 %

Breakage / Wastage

8 – 10 %

Nil – 0.5 %

Mortar Consumption

High

Less

Density

1500 – 1700 Kg/cm3

550 – 650 Kg/cm3

Nos. of Bricks for per Cubic Meter

592 Nos [9x4x3inch]

67 Nos.[25x9.6x4inch]

Mortar Joint Thickness

15 – 18 mm

8 – 10 mm

Plaster Thickness

15 – 20 mm

10 – 12 mm