What is hollow brick masonry?
The rough surface of concrete blocks makes plastering easier. • The hollow concrete blocks can safely withstand against atmospheric action, it does not required any plastering as required in brick masonry.
What are the advantages of hollow concrete block masonry?
Advantages of Using Concrete Hollow Blocks – An innovation in building products
- Highly durable. One of the major advantages of concrete hollow blocks is their high durability.
- Speedy construction.
- Greater earthquake resistance.
- Comfortable interiors.
What is the characteristics of hollow blocks?
Hollow concrete block masonry is highly durable as the concrete is compacted by high pressure and vibration, which gives substantial strength to the block. Adequate curing increases the compressive strength of the blocks.
How thick is a hollow block wall?
Sizes and structure Blocks come in modular sizes, with the most popular typically referred to (by their thickness) as “4-inch”, “6-inch”, “8-inch”, and “12-inch”. In the US, CMU blocks are nominally 16 in (410 mm) long and 8 in (200 mm) wide.
What are the advantages of hollow bricks?
Advantages Of Hollow Bricks:
- Strength & Durability: Hollow bricks are durable, having high compressive strength (3.5 N/mm2).
- Electrical Installation:
- Thermal Insulation:
- Energy Efficient:
- Sound Insulation:
- Fire Resistance:
- Speed Of Construction:
What are hollow blocks used for?
In general, Hollow Block is a Type of Concrete Block Used for building internal and external walls. Hollow concrete block saves time in building walls due to its large dimensions. Due to the load-carrying capacıty, the Hollow Block is playing an important role in the construction industry.
What are hollow concrete blocks used for?
HOLLOW DENSE CONCRETE BLOCKS The hollow cores can be filled with poured concrete and reinforced with steel to form incredibly strong walls for applications such as agricultural sheds, commercial and industrial buildings, storage bunkers, pond and pool linings and retaining walls.
Where are hollow concrete blocks used?
Hollow blocks are often used to build large structures like boundary fences. The reduced volume of concrete used to make each block adds up to a significant savings in cost for the materials for the whole wall. Their lighter weight also makes them easier to lift.
What is the purpose of hollow blocks?
What are the standard size of hollow concrete blocks?
HCBs are pre-cast cement concrete blocks with one or more large holes and consist of Portland cement, water, sand and aggregates. HCBs are typically available in the nominal block sizes of 400×200×200 mm, 400×150×200 mm and 400×100×200 mm as per Nepal Standard: 119/042.
Are hollow blocks strong?
As far as the technical view is concerned, hollow bricks are light,durable, easily available and gives adequate strength to the construction. It is very cheap in cost, strong and available at all local construction material shop. Many people used this hollow bricks because it reduces heat and make the building in cool.
What are the disadvantages of hollow blocks?
Disadvantages of Hollow Bricks
- Hollow blocks have poor bearing capacity because the total mass of wall decoration materials is reduced, the load-bearing capacity is also reduced.
- It is very dangerous to hang heavy objects on such walls.
What kind of concrete is a hollow block made of?
What is Concrete Hollow Blocks? A Concrete masonry unit (CMU) – also called Concrete block, cement block, and foundation block – is a large rectangular brick used in construction. Concrete blocks are made from cast concrete, example: Portland cement and aggregate, usually sand and fine gravel for high-density blocks.
Which is an example of a hollow masonry unit?
A masonry unit is brick, tile, stone, glass block, or concrete block, conforming to certain product standards of ASTM. A hollow masonry unit – is a masonry unit whose net cross-sectional area m every plane, parallel to the bearing surface is less than 75% of the gross cross-sectional area in the same plane.
How to make hollow bricks out of cement?
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.
Who are the hollow blocks in SlideShare 1?