Compare CLC


S. No.
Parameters Cellular Lightweight Concrete Bricks Burnt Clay Bricks
1. Basic raw materials & other inputs Cement, Aggregate, Fly Ash, Water & Foaming Compound Top Soil & Energy
2. General Properties
Dry Density kg/m3 750 – 800 1900
Compressive Strength in kg/cm3 25 – 30 40-75
Range of applications / utility Partition Load-bearing & non-load bearing
Aging Gains strength with age No gain in strength with age
Thermal Conductivity (W/m.k.) 0.132-0.151 for 800 kg/m3 0.184
Sound Insulation Superior than burnt clay & hollow concrete Normal
Ease of Working Can be cut, nailed & drilled Normal
3. Shape & Form
Pre-cast Brick size 600 x 200 x 100/150/200 mm 230 x 100 x 70 mm
Pre-cast elements Any size of elements Not feasible
Cast in shape Any shape & size in any density Not feasible
4. Water Absorption % by weight 12% for 800 kg/m3 density (by volume) 20% by volume
5. Drying Shrinkage mm/meter 0.10 No shrinkage
6. Productivity Output 100% more than brick work Normal
7. Eco Friendliness Pollution freeLeast energy requriement Can consume fly ash around 33% Creates smokeUses high energy Wastes agricultural land
8. Structural saving due to dead weight reduction 55% reduction in weight of walls. Tremendous structural saving for high rise buildings in Earthquake / Poor soil area No additional saving