• Schaefer Vangsgaard posted an update 2 months ago

    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 that may be solid or hollow blocks.

    The most popular 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 arrange 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 about 3N/mm2. ASTM C-90-91 specifies the compressive strength requirements of concrete masonry units.

    Kinds of Concrete Blocks or Concrete Masonry Units

    Depending upon the framework, 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, that happen to be heavy in weight and made of dense aggregate. They may be strong and provides good stability to the structures. So for big work of masonry like for load bearing walls these solid blocks are preferable. One can choose from large sizes in comparison to bricks. So, it will take less time to construct concrete masonry than brick masonry.

    Hollow Concrete Blocks

    Hollow concrete blocks contains void area higher than 25% of gross area. Solid area of hollow bricks needs to be over 50%. The hollow part could be separated into several components according to our requirement. These are manufactured from lightweight aggregates. They are lightweight blocks and straightforward 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 in the ends or corners of masonry. The ends could possibly be window or door openings etc. they may be arranged in a fashion that their plane end visible facing outward and other end is locked together with the stretcher block.

    Concrete Corner Blocks

    Corner blocks are utilized with the ends or corners of masonry. The ends might be door or window openings etc. they are arranged in ways that their plane end visible out along with other end is locked with the stretcher block.

    Concrete Pillar Blocks

    Pillar block is also known as double corner block. Generally these are generally used when two ends from the corner are visible. In the event of piers or pillars these blocks are popular.

    Jamb Concrete Blocks

    Jamb blocks are used should there be an elaborated window opening within the wall. They may be linked to stretcher and corner blocks. For that provision of double hung windows, jamb blocks are incredibly useful to provide space for your casing members of window.

    Partition Concrete Block

    Partition concrete blocks are likely to be 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 utilized when considering provision of beam or lintel beam. Lintel beam is generally provided on the top area of doors and windows, which bears the burden received from top. Concrete lintel blocks have deep groove over the length of block as shown in figure. After placing the blocks, this groove is filled with 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 hold mortar and provide the strong bond with top laying block.

    Bullnose Concrete Block

    Bullnose blocks are similar to corner blocks. Their duties also same but when we wish rounded edges at corner bullnose bricks are preferred.

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