Taking a Look at Bricks

1100 Words Feb 19th, 2018 4 Pages
They are the oldest and most durable building materials for mankind. The clay materials used are compounds of alumina, silica mixed with small amounts of lime, magnesium or potash (Demir 2008).
Extrusion rates of twenty thousand bricks per hour are what modern brick manufacturers work with. Solid bricks used are of the size 215mm x 102.5mm x 65 mm and weighs 3 kg.
Brick manufacturing process
Harvesting of clay is by bulldozers, scrapers or mechanical shovels. Stockpiles are put to enable the blending of the various types of clay. The clay piles are fed to the primary crushers to reduce the size particle to 3mm or less (Kaushik 2007). Conveyors carry the clay for secondary crushing in the pan mill whose base is perforated the crushed material to pass through (Lingling 2005). Clay particles fall between high-speed rollers for grinding. Wet clay is moulded into bricks.
Overall Dimensions and Tolerances
For this study the standard size of the manufactured brick is 215mm x 102.5mm x 65mm with a mass 3kg. This is according to the BS EN772 and the BS PAS 70 standard methods of testing.
Masonry unit Strength
Bricks compressive strength varies according to the different qualities of clay material used and the firing method. Compressive strengths of bricks range between 3.5MPa to over 50MPa (Demir 2008). The durability of the bricks cannot be fully determined by compressive strength.…

More about Taking a Look at Bricks

Open Document