Kinds Of Concrete Blocks Or Concrete Masonry Pieces Utilized In Construction Engineering

Concrete block masonry which is also known as concrete masonry unit (CMU) have advantages over brick and stone masonry.

Concrete blocks are made in required shape and sizes which might be solid or hollow blocks.

The common height and width of concrete blocks is 39cm x 19cm x (30cm or 20 cm or 10cm) or 2 inch, 4 inch, 6 inch, 8 inch, 10 " and 12-inch unit configurations.

Cement, aggregate, water is employed to organize concrete blocks.

The cement-aggregate ratio in concrete blocks is 1:6. Aggregate used is of 60% fine aggregate and 40% coarse aggregate.

Their Minimum strength is around 3N/mm2. ASTM C-90-91 specifies the compressive strength requirements of concrete masonry units.

Forms of Concrete Blocks or Concrete Masonry Units

Based upon the dwelling, shape, size and manufacturing processes concrete blocks are generally classified into 2 types and they are generally:

Solid concrete blocks
Hollow concrete Blocks


Solid Concrete Blocks

Solid concrete blocks are generally used, which are heavy in weight and produced from dense aggregate. They are quite strong and gives good stability towards the structures. So for big work of masonry like for load bearing walls these solid blocks are preferable. One can choose from large sizes when compared with bricks. So, it takes less time to make concrete masonry than brick masonry.


Hollow Concrete Blocks

Hollow concrete blocks contains void area higher than 25% of gross area. Solid section of hollow bricks needs to be greater than 50%. The hollow part could possibly be divided into several components determined by our requirement. They may be constructed from lightweight aggregates. These are transportable blocks as well as simple to put in.

Kinds of Hollow Concrete Blocks:

Stretcher block
Corner block
Pillar block
Jamb block
Partition block
Lintel block
Frogged brick block
Bullnose block

Concrete Stretcher Blocks
Corner blocks are utilized on the ends or corners of masonry. The ends could be window or door openings etc. they're arranged in a manner that their plane end visible out and other end is locked with the stretcher block.

Concrete Corner Blocks
Corner blocks are utilized in the ends or corners of masonry. The ends could be door or window openings etc. these are arranged in ways that their plane end visible external as well as other end is locked with the stretcher block.

Concrete Pillar Blocks
Pillar block is also known as double corner block. Generally they're used when two ends of the corner are visible. In the case of piers or pillars these blocks are traditionally used.

Jamb Concrete Blocks
Jamb blocks are widely-used if you have an elaborated window opening from the wall. They may be attached to stretcher and corner blocks. For that provision of double hung windows, jamb blocks are very helpful to provide space to the casing members of window.

Partition Concrete Block
Partition concrete blocks are generally utilized to build partition walls. Partition blocks have larger height than its breadth. Hollow part is divided into 2 to 3 components in case there is partition blocks.

Lintel Blocks
Lintel block or beam block can be used when considering provision of beam or lintel beam. Lintel beam is usually provided in the top percentage of windows and doors, which bears the burden via top. Concrete lintel blocks have deep groove down the duration of block as shown in figure. After placing the blocks, this groove is loaded with concrete as well as reinforcement.

Frogged Brick Blocks
Frogged brick block contains a frog on its top along with header and stretcher like frogged brick. This frog will helps the block to support mortar and provide the strong bond with top laying block.

Bullnose Concrete Block
Bullnose blocks act like corner blocks. Their duties also same when we wish rounded edges at corner bullnose bricks are preferred.


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