HOLLOW BRICKS

PPT ON HOLLOW BRICKS

1. RAMAKRISHNA MISSION SHILPAMANDIRA SUBHABRATA DATTA DCE-2 ND YEAR ROLL-50

2. HOLLOW BRICKS

3. CONCRETE HOLLOW BLOCKS Is a large rectangular brick used in construction. Portland cement and aggregate, usually sand and fine gravel for high-density blocks. Size -12x8x4 inch BASIC INFORMATION

4. COMMON PARTS

5. DESCRIPTION Have one or more hollow cores. In general, a hollow-core concrete block is more than 50 % solid. Standard hollow concrete blocks come in full and half sizes. Full-size blocks are rectangular and have two cores. Half size blocks are cubical and have one core.

6. Raw Materials Required Cement Sand Gravel s Water

7. Production Processes 1. Raw Materials Mixing 2. Brick/Block Molding 3. Vibrating & Compacting 4. Curing/Drying 5. Brick/Block Packing

8. Manufacturing Process Cement concrete blocks are - solid or hollow. The blocks sizes are - 12x8x4 "; 12x8x3 "; 12x8x6", etc. Cement , stone chips, sand, etc. are mixed in the ratio of 1:6 or 1:12 . vibrate the mixture and then poured into the desired size mould . After 24 hours of drying, the blocks are put in water tank for curing . C uring time - two to three weeks to give the blocks compression strength.

9. Highly Durable : The good concrete compacted by high pressure and vibration gives substantial strength to the block. Proper curing increase compressive strength of the blocks. Low Maintenance Fire Resistant Provide thermal and sound insulation Economical Environment Friendly ADVANTAGES OF HOLLOW BRICKS

10. STRUCTURAL ADVANTAGES Reducing the vulnerability (exposed to damage) of disastrous damage to the structure/building, during the natural hazards . Provide and offer better resistance under dynamic loading

11. CONSTRUCTIONAL ADVANTAGES No additional formwork or any special construction machinery is required for reinforcing the hollow block masonry. Only semi-skilled labour is required for this type of construction. It is a faster and easier construction system , when compared to the other conventional construction systems. It is also found to be a cost-effective disaster resistant construction system

12. ARCHITECTURAL AND OTHER ADVANTAGES This construction system provides better acoustic and thermal insulation for the building. Faster construction : - Easy to work with bigger in size. Recommended for earth quake resistance. Less water absorption:- Approx. 3 to 4% Environmental Eco-Friendly This system is durable and maintenance free. No leaching : - Reduction in maintenance.

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