Different Types Of Concrete Blocks Or Concrete Masonry Items Used In Construction

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

Concrete blocks are designed in required shape and sizes that might be solid or hollow blocks.

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

Cement, aggregate, water is utilized 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.

Varieties 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:

Solid concrete blocks

Hollow concrete Blocks

Solid Concrete Blocks

Solid concrete blocks are normally used, that happen to be heavy in weight and constructed from dense aggregate. These are very good and supplies good stability towards the structures. So for giant work of masonry like for load bearing walls these solid blocks are preferable. They are available in large sizes compared to bricks. So, it will take a shorter period 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 must be greater than 50%. The hollow part could be divided into several components based on our requirement. They are made of lightweight aggregates. These are light-weight blocks and straightforward to put in.

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 might be window or door openings etc. they may be arranged in a fashion that their plane end visible external 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 might be door or window openings etc. they may be arranged in ways that their plane end visible to the outside as well as other end is locked together with the stretcher block.

Concrete Pillar Blocks

Pillar block is also referred to as double corner block. Generally they're used when two ends in the corner are visible. In case there is piers or pillars these blocks are popular.

Jamb Concrete Blocks

Jamb blocks are used if you find an elaborated window opening within the wall. These are attached to stretcher and corner blocks. For the provision of double hung windows, jamb blocks have become beneficial to provide space for the casing folks window.

Partition Concrete Block

Partition concrete blocks are generally employed to build partition walls. Partition blocks have larger height than its breadth. Hollow part is divided into two to three components in the case of partition blocks.

Lintel Blocks

Lintel block or beam block is employed with regards to provision of beam or lintel beam. Lintel beam is mostly provided on top portion of doors and windows, which bears the burden originating from top. Concrete lintel blocks have deep groove across the length of block as shown in figure. After placing the blocks, this groove is full of concrete together with reinforcement.

Frogged Brick Blocks

Frogged brick block includes a frog on its top as well as header and stretcher like frogged brick. This frog will helps the block to hold mortar and to develop the strong bond with top laying block.

Bullnose Concrete Block

Bullnose blocks resemble corner blocks. Their duties also same however when we want rounded edges at corner bullnose bricks are preferred.

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