Brick

studying really very sien...
this is what i'm studying now....

BRICK

• a rectangular block of clay or cement sand that is used in construction work.
• solid or hollow
• moulded in plastic state and baked in kiln

Terminology:

• green brick: wet brick that is moulded and is drying before being baked in a kiln.
• clinker brick: surface of some brick that is too close to the fire during firing, partly vitrified, and the colour change to purplish and darker colour.
• dry-pressed process: use thicker clay mix, so it forms more accurate, sharper-edged bricks. Need greater force of pressing and longer firing therefore more expensive.
• firebrick: used in fireplace because resist temperature. Why? because it contains metal oxide.
• glazed brick: glazed surface. for hygiene, resist corrosion and decorative purpose.
• vitrified brick: rich in lime and iron oxide. fired at vitrifying heat to make it impervious.

glazed brick.

Types of Brick:

• normal brick: used for internal and external partition. Not load bearing. Plastering work on both sides.
• facing brick: for external wall
• engineering brick: made from selected brick. very strong. load bearing wall.

Quality of good brick:

• uniform in shape and sizes
• uniform in dimensions
• uniform in texture
  
• not defects
• well burnt

Concrete block:

• hollow, wider and bigger
• consists of Portland cement and other aggregates
• shall not be soaked in water
• dipped before laying
• shall not be laid until matured for at least 14 days

Brick Laying