An interesting article to read on the art of brick masonry. The information comes from The Constructor – please follow the link to read the full article.
“Brick masonry is a highly durable form of construction. It is built by placing bricks in mortar in a systematic manner to construct solid mass that withstand exerted loads. There are several types of bricks and number of mortars which can be used to construct brick masonry.
The bond in brick masonry, which adheres bricks together, is produced by filling joints between bricks with suitable mortar. Special cautions shall be practiced while mortar is mixed and placed since it greatly affect the performance and durability of masonry structure.
Types of Brick Masonry Work
- Brick Work in Mud
The mud is used to fill up various joints brick masonry work.
Thickness of the mortar joint is 12 mm.
it is the cheapest type of brick masonry
employed for construction of walls with maximum height of 4 m.
- Brick Work in Cement
This type of brick masonry is construction by laying bricks in cement mortar rather than mud which is used in brick work in mud. There are three major classes of brick work in cement which are summarized below.
Cement of lime mortar is used,
The surface and edges of bricks are sharp,
And the thickness of mortar joints doesn’t exceed 10mm
Ground moulded bricks are used,
Bricks are rough and shape is slightly irregular,
The thickness of mortar joint is 12 mm.
Bricks are not hard ,rough surface with distorted shape,
Used for temporary structures,
Used in places where rainfall is not heavy.
Types of Bricks
There are different types of brick used in the construction of brick masonry which include:
Common Burnt Clay Bricks
Sand Lime Bricks (Calcium Silicate Bricks)
Fly ash Clay Bricks
Other Brick Types (include bullnose, channel, coping, cownose and hollow bricks.)
Brick Masonry Construction
Materials and Equipment Used in Brick Masonry Construction
Mortar Mix or Mason Mix Bricks
Hose, level, or theodolite
And other equipment according to project ans personal preferences
Brick Masonry Construction Preparations
Check the level of the ground using level, theodolite or transparent hose level.
Set the layout of the structure.
Trace of building axis and wall alignment using gypsum powder, chalk, or similar, marking the trenches for foundation.
After that,install foundation wall, cure foundation for minimum two days before beginning of brick masonry construction.
Distribute bricks in several stacks along project site to cut time and effort later.
Wet bricks few hours prior to the work. Not only does this avoid absorbing too much water from mortar but also improve adherence of bricks and mortar.
Brick Masonry Construction Procedure
Initially, mix the mortar with water and blend it until a smooth and plastic mortar is produced.
After that, place the mortar on foundation line evenly using trowel (25mm thickness and one brick wide is recommended for laid mortar).
Then, lay the first course of stretcher bricks in the mortar. Start with second brick, apply mortar to the head joint end of each brick, After that shove the bricks into place firmly so that the mortar is squeezed out of all side of the joints.
Utilize a level to examine the course for correct height. ensure that bricks are plumb and level.
Place another mortar line alongside the first course, then begin laying the second course.
Use the two half bricks to begin the second to ensure that the first two courses are staggered for structural purposes.
To finish the second course of the lead, lay three header bricks and make sure that they are plumb and level.
The third and fifth courses consists of stretchers similar to the first course.
The fourth course begins with single header, followed by stretchers. Use the level to make sure that the lead is true on each course.
Lastly, this pattern of brick laying is used till the target height is reached.”
For more – please go to the original article (link above)