There are various types of bricks used in construction.
They can be classified based on the following criteria:
- Quality of bricks
- Raw materials used to make bricks
- Location of using bricks
- Weather Resisting Capability
- Purpose of their using
All Types Of Bricks Used In Construction
Based on Bricks Quality
Depending on quality, bricks are three type –
- First-class brick
- Second-class brick, and
- Third-class brick.
These bricks are made from good quality raw materials. The color of first-class bricks is uniform.
These are regular in size and shape and don’t absorb more than 20% water of their own dry weight when immersed in fresh water for 24 hours.
The crushing strength of this type of bricks should be 105 kg/cm2.
The quality of this type of bricks is a little bit less from first-class bricks.
Such as these can be slightly over burned. The size and shape can slightly differ from the standard.
The crushing strength of this brick-type should be above 70 kg/cm2.
These bricks don’t absorb more than 22% water of their own weight after 24 hours immersion in freshwater.
Third Class Bricks:
This type of bricks isn’t uniform in size and shape.
They can be over burnt or under burnt.
They don’t absorb more than 25% water of their own weight when immersed 24 hours in freshwater.
The crushing strength of this type of bricks is more than 30 kg/cm2.
Based on Raw Materials
Depending on raw materials used for making bricks, they can be following types –
- Burnt Clay bricks
- Fly Ash Clay bricks
- Concrete bricks
- Sand-Lime bricks
- Fire clay bricks
Burnt Clay Bricks: This type of bricks are usually made from clay by burning. These are the common type of bricks used in construction.
Fly Ash Clay bricks: When fly ash is mixed with clay for producing bricks that are fly ash clay bricks.
Concrete bricks: The main raw materials for this type of bricks are cement and sand. It is also called mortar bricks.
Sand-Lime bricks: Lime is used instead of cement with sand for producing this type of bricks.
Fire bricks: This type of bricks is made from fire clay. These bricks can tolerate high temperatures without distortion and cracks. That’s why it can be used in fireplaces.
Based on Using Locations
Depending on using locations, bricks can be two types –
- Facing bricks, and
- Backing bricks.
Facing bricks: This type of bricks is used on the surface of the backing wall. These are high quality and show various texture on their surface.
Backing bricks: This type of bricks doesn’t contain any texture on their surfaces. It works as backing support of facing brick.
Based on Weather Resisting Capability
Depending on weather resisting capability bricks are three types –
- Severe Weather grade (SW)
- Moderate Weather grade (MW)
- No Weather grade (NW).
Severe Weather grade: This type of bricks can withstand against repeated freeze-thaw actions. These are useful for countries where severe freeze-thaw actions happened.
Moderate Weather grade (MW): This type of bricks can be useful for hot-weathering affected countries where freeze-thaw action doesn’t happen much.
No Weather grade (NW): This type of bricks are general and it doesn’t have any weather resisting capability. It’s mostly used in the interior wall.
Based on the Purpose of Their Using
Purpose of their using, bricks can be following types –
- Common bricks
- Engineering bricks.
Common bricks: This type of bricks is used for general purpose with no special requirements. Walls that are made with this type of bricks should be plastered.
Engineering bricks: This type of bricks is burnt at extremely high temperatures to form a strong and dense product. They have excellent load-bearing capacities and high damp-proof capability.
[Editor’s Note: This post was originally published in Sep 2013 and has been completely revamped and updated for accuracy and comprehensiveness.]
How many types of bricks have you used for your construction work? Please share your in the comments below…