Quiz on Brick Manufacturing

What are the constituents of good brick earth?

• Silica

• Alumina

• Lime

• Iron oxide

• Magnesia

What is the role of silica in brick earth?

• Prevents cracking and warping

• Improves plasticity

• Prevents shrinkage

• Gives red color to bricks

What happens if alumina is present in excess?

• Bricks shrink and warp

• Bricks become brittle

• Bricks lose their shape

• Bricks gain strength

What is the percentage of lime in good brick earth?

• 0% to 5%

• 5% to 10%

• 10% to 15%

• 15% to 20%

What harmful ingredient can cause bricks to melt?

• Excess lime

• Iron pyrites

• Alkalis

• Pebbles

What is the first step in the manufacturing of bricks?

• Moulding

• Drying

• Preparation of clay

• Burning

What is the purpose of weathering in brick manufacturing?

• To clean the clay

• To soften and mellow the clay

• To blend the clay

• To temper the clay

What is the role of a pug mill in brick manufacturing?

• To mould the bricks

• To prepare the clay

• To dry the bricks

• To burn the bricks

What is the thickness of steel moulds used for brick manufacturing?

• 4mm

• 6mm

• 8mm

• 10mm

What is the purpose of a frog in brick moulding?

• To indicate the trade name of the manufacturer

• To provide a key for mortar when laying bricks

• Both of the above

• None of the above