Different Types Of Concrete Blocks Or Concrete Masonry Pieces Utilized In Construction
Concrete block masonry also is generally known as 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 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 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 approximately 3N/mm2. ASTM C-90-91 specifies the compressive strength requirements of concrete masonry units.
Kinds of Concrete Blocks or Concrete Masonry Units
Based upon the structure, 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 can be used, that happen to be heavy in weight and manufactured from dense aggregate. They may be very strong and gives good stability on the structures. So for big work of masonry like for load bearing walls these solid blocks are preferable. One can choose from large sizes compared to bricks. So, it will require a shorter period to develop concrete masonry than brick masonry.
Hollow Concrete Blocks
Hollow concrete blocks contains void area more than 25% of gross area. Solid section of hollow bricks ought to be over 50%. The hollow part could be split up into several components determined by our requirement. They may be produced from lightweight aggregates. These are transportable blocks and simple to set up.
Varieties 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 used in the ends or corners of masonry. The ends might be window or door openings etc. they're arranged in a manner that their plane end visible to the outside along with other end is locked together with the stretcher block.
Concrete Corner Blocks
Corner blocks are used in the ends or corners of masonry. The ends may be window or door openings etc. they are arranged in a way that their plane end visible facing outward and other end is locked using the stretcher block.
Concrete Pillar Blocks
Pillar block can also be referred to as double corner block. Generally they are used when two ends from the corner are visible. In the event of piers or pillars these blocks are trusted.
Jamb Concrete Blocks
Jamb blocks are widely-used when there is an elaborated window opening inside the wall. They may be associated with stretcher and corner blocks. For that provision of double hung windows, jamb blocks have become useful to provide space for the casing people in window.
Partition Concrete Block
Partition concrete blocks are often accustomed to build partition walls. Partition blocks have larger height than its breadth. Hollow part is divided into two to three 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 on top percentage of windows and doors, which bears the load originating from top. Concrete lintel blocks have deep groove along 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 posesses a frog on its top as well as header and stretcher like frogged brick. This frog will helps the block to carry mortar and to develop the strong bond with top laying block.
Bullnose Concrete Block
Bullnose blocks resemble corner blocks. Their duties also same however, if we wish rounded edges at corner bullnose bricks are preferred.
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