Size:
[6"] :- 230 x 150 x 80 mm
230 x 150 x ( Up to 100 mm )
Size
[4"] :- 230 x 110 x 75 mm
230 x 110 x 100 mm Can be available in other suitable sizes depending on the quantity.
2) Compressive Strength : Avg. 6 N / Sq.mm. ( As against 3.5 N/Sq. mm for handmade clay bricks )
3) Water Absorption : 8-12 % ( As against 20 to 25% for Clay Bricks )
4) Efflorescence : Nil
5) Density : 1700 Kg/m3
6) Weight:
230x150x80 mm ( Weight about 5.0 to 5.20 kgs. )
230x110x75 mm ( Weight about 3.4 to 3.60 kgs. )
7) Composition :-
i) Cement : Birla Super Cement OPC 53 Grade
ii) Thermal Station Fly Ash
iii) Crushed Sand / Stone Dust
iv) Chemicals
ADVANTAGES :-
1. Due to high strength, practically no breakage during transport & use.
2. Due to uniform size of bricks mortar required for joints & plaster reduces almost by 50%.
3. Due to lower water penetration seepage of water through bricks is considerably reduced.
4. Plaster of Paris / Gypsum Plaster can be directly applied on these bricks without a backing coat of plaster
5. These bricks do not require soaking in water for 24 hours. Only sprinkling of water before use is enough.
Fly Ash
Thermal power stations are left with an undesirable by-product, fly ash, in large quantities which is not able to effectively utilize or dispose of. Currently, (2009) more than 120 million tonne of fly ash are generated annually and the storage and disposal has been costing the power stations substantial unproductive expenditure. Unfortunately, all the fly ash available at the power stations is not fit for use as mineral admixture directly. Fly ash as a mineral admixture should conform to IS: 3812. Such a material is available in the finer streams of Electro Static Precipitators fitted to the power generation system.
The coarser materials are required to be processed (generally with the help of Cyclones) before being considered for use as mineral