Varieties Of Concrete Blocks Or Concrete Masonry Pieces Present In Construction Engineering

Concrete block masonry and this is referred to as concrete masonry unit (CMU) have advantages over brick and stone masonry.

Concrete blocks are manufactured in required shape and sizes and the could be solid or hollow blocks.

The normal sized concrete blocks is 39cm x 19cm x (30cm or 20 cm or 10cm) or 2 inch, 4 inch, 6 inch, 8 inch, 10 inch and 12-inch unit configurations.

Cement, aggregate, water can be used to prepare 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 all about 3N/mm2. ASTM C-90-91 specifies the compressive strength requirements of concrete masonry units.

Forms of Concrete Blocks or Concrete Masonry Units

Based on the framework, shape, size and manufacturing processes concrete blocks are mainly classified into 2 types and they are generally:

Solid concrete blocks
Hollow concrete Blocks


Solid Concrete Blocks

Solid concrete blocks are commonly used, that are heavy in weight and manufactured from dense aggregate. They may be strong and gives good stability to the structures. So for large work of masonry like for load bearing walls these solid blocks are preferable. These come in large sizes in comparison with bricks. So, it requires less time to make concrete masonry than brick masonry.


Hollow Concrete Blocks

Hollow concrete blocks contains void area greater than 25% of gross area. Solid section of hollow bricks ought to be more than 50%. The hollow part might be split into several components determined by our requirement. They're produced from lightweight aggregates. These are light weight blocks as well as simple to install.

Forms 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 widely-used with the ends or corners of masonry. The ends may be window or door openings etc. they are arranged in ways that their plane end visible external and also other end is locked using the stretcher block.

Concrete Corner Blocks
Corner blocks are used with the ends or corners of masonry. The ends might be door or window openings etc. they may be arranged in a manner that their plane end visible external as well as other end is locked using the stretcher block.

Concrete Pillar Blocks
Pillar block can also be recognized as double corner block. Generally they are used when two ends in the corner are visible. In the event of piers or pillars these blocks are traditionally used.

Jamb Concrete Blocks
Jamb blocks are employed if you have an elaborated window opening within the wall. They may be attached to stretcher and corner blocks. To the provision of double hung windows, jamb blocks are very helpful to provide space for that casing individuals window.

Partition Concrete Block
Partition concrete blocks are usually utilized to build partition walls. Partition blocks have larger height than its breadth. Hollow part is split into two or three components in case there is partition blocks.

Lintel Blocks
Lintel block or beam block is utilized for the purpose of provision of beam or lintel beam. Lintel beam is mostly provided on the top percentage of windows and doors, which bears the load via top. Concrete lintel blocks have deep groove over the amount of block as shown in figure. After placing the blocks, this groove is stuffed with concrete as well as reinforcement.

Frogged Brick Blocks
Frogged brick block posesses a frog on its top in addition to header and stretcher like frogged brick. This frog will helps the block to support mortar and to get the strong bond with top laying block.

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


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