DEFECTS IN BRICK MASONARY.



 Following are the different types of defects generally found in bricks:

1. Over burning of bricks

When bricks over-burn, soft molten mass is produced and the brick will its shape along with other designated requirements. 

2.Under burning of bricks

  • When bricks are not burnt to cause complete vitrification, the clay is not softened because of insufficient heat and the pores are not closed.Consequently, bricks with low compressive strength and high-water absorption will be produce .They produce a dull sound when struck against each other. Finally, such bricks are not recommended for construction works.

3. Bloating of bricks 

Bloating of bricks is spongy swollen mass over the surface of burned bricks. Presence of excess carbonaceous matter and Sulphur in brick-clay is the main cause of bloating.


4. Efflorescence

Presence of drying grey or white powder patches on the brick surface is the efflorescence indicator. This defect is caused because of alkalis present in bricks. When bricks come in contact with moisture, water is absorbed and the alkalis crystalize. Lastly, efflorescence can be minimized by selecting proper clay materials for brick manufacturing, preventing moisture to come in contact with the masonry, by providing waterproof coping and by using water repellent materials in mortar and by providing damp proof course. 


For any kind of Construction Consultancy Kindly visit Sahrajengineering.com


* This is a research article only for educational purpose, Images are for reference.

 




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