Skip to main contentdfsdf

Home/ phonelock8's Library/ Notes/ Kinds Of Concrete Blocks Or Concrete Masonry Units Present In Construction

Kinds Of Concrete Blocks Or Concrete Masonry Units Present In Construction

from web site

click here





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




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

The regular sized 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 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.

Varieties of Concrete Blocks or Concrete Masonry Units

Based on the structure, shape, size and manufacturing processes concrete blocks mostly are 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 made of dense aggregate. They are very good and supplies good stability to the structures. So for large 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 a shorter time to construct concrete masonry than brick masonry.


Hollow Concrete Blocks

Hollow concrete blocks contains void area more than 25% of gross area. Solid division of hollow bricks ought to be more than 50%. The hollow part may be separated into several components depending on our requirement. They may be made of lightweight aggregates. They are transportable blocks as well as simple to install.

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

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

Concrete Pillar Blocks
Pillar block is additionally called as double corner block. Generally these 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 utilized if you find an elaborated window opening within the wall. They're linked to stretcher and corner blocks. For your provision of double hung windows, jamb blocks are very useful to provide space for the casing folks 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 2 to 3 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 mostly provided at the top portion of doors and windows, which bears the load originating from top. Concrete lintel blocks have deep groove along the amount of block as shown in figure. After placing the blocks, this groove is loaded with concrete along with reinforcement.

Frogged Brick Blocks
Frogged brick block contains a frog on its top along with header and stretcher like frogged brick. This frog will helps the block to hold mortar and get the strong bond with top laying block.

Bullnose Concrete Block
Bullnose blocks are similar to corner blocks. Their duties also same however when we want rounded edges at corner bullnose bricks are preferred.


For details about con ke be tong browse this site: read here
phonelock8

Saved by phonelock8

on Oct 06, 22