Hollow blocks
“GRAMS Blocks” are manufactured by using proportionate blend of cement, high quality fly ash and lime . These blocks are made lightweight by adding alumina powder to the slurry made of cement –fly ash-lime – this alumina powder reacts with the slurry/paste and releases hydrogen gas and thus creates millions of tiny air cells leading to a strong cellular structure . A cake formed with this process is further strengthened by high pressure steam curing in the autoclave. Stringent quality control is ensured throughout the process .
Brought to you by the promoters of Grams Infratech Pvt. Ltd. a new generation, well needed, revolutionary product.
Comparison Between Grams Block, Concrete Block & Clay Brick
| Parameter | Grams Block | Concrete Block | Clay Bricks |
|---|---|---|---|
| Size (Length X Depth x Thickness) |
600mmx200mmx75mm 600mmx200mmx100mm 600mmx200mmx130mm 600mmx200mmx150mm 600mmx200mmx200mm 600mmx200mmx230mm |
400mmx200mmx100mm 400mmx200mmx150mm 400mmx200mmx200mm |
220mmx110mmx70mm |
| Variation in dimension | +/-1mm | +/-5mm | +/-8mm |
| Compressive strength | 35-40 kg / cm 2 | 40-50 kg / cm 2 | 25-30 kg / cm 2 |
| Dry density | 550-600 kg / m3 | 1800 kg / m3 | 1950 kg / m3 |
| Fire resistance | 4-6 Hour | 4 Hour | 2 Hour |
| Sound reduction Index (db) | 60 for 200mm thick wall | +/-5 mm | 40 for 230 mm thick wall |
| Thermal conductivity | 0.16 | 0.51 | 0.81 |
| Colour availability | Greyish white | Grey | Red |
Why Grams Block
“GRAMS Blocks” are high quality building material that combines strength, ease of use, cost effectiveness and eco-friendliness to offer the most reliable alternative to traditional construction material.
“GRAMS Blocks” is a steam cured mix of pulverized fly-ash, cement, lime and aeration agent. The high pressure steam curing in autoclaves achieves the desired physical and chemical stability that has had average density which is 1/5th of a normal concrete block and 1/4th of a clay brick. Grams block consists of 80% air by volume making it the lightest available walling material.
Grams Blocks v/s Clay Bricks
| GRAMS BLOCKS | CLAY BRICKS |
|---|---|
| Comprehensive Strength: > 10 N/mm 2 | |
| No top soil consumed | One clay brick consumes approx 3.0 kgs of top soil |
| Uses fly ash which is athermal power plant Waste product & thus no consumption of top soil | One sq ft of carpet area with clay bricks walling will consume 25.5kgs of top soil |
| One sq ft of carpet area with AAC Blocks will consume 0.9677kgs of coal | One sq ft of carpet area with AAC Blocks will consume 0.9677kgs of coal |
| One sq ft of carpet area will emit 2.13 kgs of CO2 | One sq ft of carpet area will emit 17.6 kgs of CO2 |
| Social Impact | |
| Organised sector, Nation building through corporate governance, statutory labour and HR practics | Unorganised sector (child labour rampact in unorganised sector) |
| Contributes to goverment taxes from of central Excise, VAT & Octrol | Dose not contribute to goverment exchaquar |
| Organised sector with state-of-the-art factory facility | Unhealthy working condition a major health hazard due to toxic gases |