Classification Of Bricks Based On Materials

Classification Of Bricks As Per Common Practice

Bricks, Which Used In Construction Works Burnt Bricks. They Are Classified Into Four
Categories On The Basis Of Its Manufacturing And Preparation, As Given Below.

  • First class bricks
  • Second class bricks
  • Third class bricks
  • Fourth class bricks

First Class Bricks

These Bricks Table Moulded And Of Standard Shape And They Burnt In Kilns.

The Surface And Edges Of The Bricks Are Sharp, Square, Smooth And Straight. They Comply With All The Qualities Of Good Bricks These, Bricks Used For Superior Work Of Permanent Nature.

Second Class Bricks:

These Bricks Ground Moulded And They Burnt In Kilns. The Surface Of These Bricks Is Somewhat Rough And Shape Is Also Slightly Irregular.

These Bricks May Have Hair Cracks And Their Edges May Not be Sharp And Uniform. These Bricks Are Commonly Used At .Places Where Brick Work Is To Be Provided With A Coat Of Plaster.

Third Class Bricks:

These Bricks Ground Moulded And They Burnt In Clamps. Bricks Are Not Hard And They Have Rough Surfaces With Irregular And Distorted Edges. These Bricks Give Dull Sound When Struck Together. They Used For Unimportant And Temporary Structures And At Places Where Rainfall Is Not Heavy.

Fourth Class Bricks:

These Are Over Burnt Bricks With Irregular Shape And Dark Colour. These Bricks Used As Aggregate For Concrete In Foundations, Floors, Roads Etc, Because Of The Fact That The Over Burnt Bricks Have A Compact Structure And Hence They Are Sometimes Found To Be Stronger Than Even The First Class Bricks.

Classification Of Bricks As Per Constituent Materials

There Are Various Types Of Bricks Used In Masonry,

Common Burnt Clay Bricks

Common Burnt Clay Bricks Formed By Pressing In Moulds. Then These Bricks Dried And Fired In A Kiln. Common Burnt Clay Bricks Used In General Work With No Special Attractive Appearances. When These Bricks Used In Walls, They Require Plastering Or Rendering.

Sand Lime Bricks

Sand Lime Bricks Made By Mixing Sand, Fly Ash And Lime Followed By Chemical Process During Wet Mixing. The Mix Is Then Moulded Under Pressure Forming The Brick. These Bricks Can Offer Advantages Over Clay Bricks Such As Their Colour Appearance Is Grey Instead Of The Regular Reddish Colour. Their Shape Is Uniform And Presents A Smoother Finish That Doesn’t Require Plastering.These Bricks Offer Excellent Strength As A Load-Bearing Member.

Engineering Bricks

Engineering Bricks Are Bricks Manufactured At Extremely High Temperatures, Forming A Dense And Strong Brick, Allowing The Brick To Limit Strength And Water Absorption.Engineering Bricks Offer Excellent Load Bearing Capacity Damp-Proof Characteristics And Chemical Resisting Properties.

Concrete Bricks

The Concrete Bricks Made From Solid Concrete. Concrete Bricks Usually Placed In Facades, Fences, And Provide An Excellent Aesthetic Presence. These Bricks Can Manufactured To Provide Different Colours As Pigmented During Its Production.

Fly Ash Clay Bricks

Fly Ash Clay Bricks Manufactured With Clay And Fly Ash, At About 1,000 Degrees C. Some Studies Have Shown That These Bricks Tend To Fail Poor Produce Pop-Outs, when Bricks Come Into Contact With Moisture And Water, Causing The Bricks To Expand.

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