Technology
FaL-G is a technological renaissance of the age-old pozzolanic chemistry proven for its strength and durabilityRead more
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FaL-G Technology is amenable for a number of products such as bricks & blocks, mortar, concrete in both RCC & PCC, and precast elements.Read more
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Technical Parameters
FaL-G as a concrete stone (Brick) can be manufactured to a wide range of strengths and technical parameters. On typical specimen the following data is obtained.
| Applicable Codes | : | IS : 12894 - 2002 & IS 516 - 1959 (for strength test) |
| Soundness | : | Le Chatelier method, vide Clause 5.1 of BIS : 4031 - 1968 (Methods of Physical test for hydraulic Cement) Boiling Water expansion : FaL- G : 2 mm Code (Max) : 10 mm |
| Thermal Impact : |
|
|
. |
Strength MPa |
Strength fall % |
| Grade Strength |
35.0 |
--- |
| at 200 deg C |
24.5 |
30 |
| at 600 deg C |
14.2 |
60 |
Even at elevated temperatures, the strength is maintained much above to that of class-I Bricks.
Drying Shrinkage :
Clause No. 12 of BIS : 4031 - 1968 (Physical test for Hydraulic Cement)
FaL - G : 0.08 % to 0.11 %
Code : 0.15 %
Alternate wetting and drying:
This test is meant for sintered clay brick, which is a ceramic product, wherein the quality of sintering is reflected as strength.
For FaL-G bricks, which is the hydraulic product that gains strength at every occurrence of wetting, this test is redundant.
Co-efficient of Softening:
Collect six bricks from the same lot and prepare them as dry bricks
and wet bricks as per procedure explained above. Test these bricks for
compressive strength whereby the wet strength should not be lower than 85% of dry strength. Good FaL-G bricks show this factor (wet strength/dry strength) as high as 0.90 to 0.95.
How to identify good FaL-G brick:
1) Take a brick into hand and rub the surface with thumb. If fly ash comes out showing powdery surface, it means that the inputs are not sufficient to help complete hydraulic-chemistry or the product is deficient of curing.
2) Dry the brick at not more than 50 oC till constant weight and record the dry weight. Dip the brick in water for 24-hours or till attains constant weight and record the wet weight, where the latter should not be more than 15% of dry weight. A good FaL-G brick shows this parameter to as low as 12%-5%.
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