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

Concrete blocks are produced in required shape and sizes and the may be solid or hollow blocks.

The most popular size 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 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.

Kinds of Concrete Blocks or Concrete Masonry Units

Dependant on the structure, shape, size and manufacturing processes concrete blocks are mainly classified into 2 types plus they are:

Solid concrete blocks

Hollow concrete Blocks

Solid Concrete Blocks

Solid concrete blocks are normally used, which are heavy in weight and made of dense aggregate. They’re very good and gives good stability for the structures. So for large work of masonry like for load bearing walls these solid blocks are preferable. One can choose from large sizes compared to bricks. So, it requires much less time to create 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 a lot more than 50%. The hollow part may be separated into several components depending on our requirement. These are constructed from lightweight aggregates. They are lightweight blocks and easy to set up.

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 used on the ends or corners of masonry. The ends could possibly be door or window openings etc. they may be arranged in ways that their plane end visible facing outward and also other end is locked together 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 are arranged in a fashion that their plane end visible out along with other end is locked with the stretcher block.

Concrete Pillar Blocks

Pillar block can be referred to as double corner block. Generally these are used when two ends of the corner are visible. In case there is piers or pillars these blocks are traditionally used.

Jamb Concrete Blocks

Jamb blocks are utilized if you have an elaborated window opening in the wall. They’re attached to stretcher and corner blocks. To the provision of double hung windows, jamb blocks are incredibly beneficial to provide space for that casing folks window.

Partition Concrete Block

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

Lintel Blocks

Lintel block or beam block is used with regards to provision of beam or lintel beam. Lintel beam is mostly provided at the top part of windows and doors, which bears the load originating from top. Concrete lintel blocks have deep groove down the amount 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 contains a frog on its top as well as header and stretcher like frogged brick. This frog will helps the block to support mortar and enjoy the strong bond with top laying block.

Bullnose Concrete Block

Bullnose blocks act like corner blocks. Their duties also same but when we’d like rounded edges at corner bullnose bricks are preferred.

For details about con ke thep san see this web portal