hollow bricks
TRANSCRIPT
RAMAKRISHNA MISSION SHILPAMANDIRA
SUBHABRATA DATTA DCE-2ND YEAR
ROLL-50
HOLLOW BRICKS
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
COMMON PARTS
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.
Raw Materials Required
CementSand
GravelsWater
Production Processes1. Raw Materials Mixing2. Brick/Block Molding3. Vibrating & Compacting4. Curing/Drying5. Brick/Block Packing
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. • Curing time - two to three weeks to give the
blocks compression strength.
• 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
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
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
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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