Properties
of Material |
|
| 1. hard -
moulded clay is baked at a very high temperature
to form bricks 2. roughish and looks dull 3. dry 4. easy to handle - bricks are all the same regular shape and size making them easy to carry and build Look at
brick buildings from different ages and notice the
difference in the size of brick used.
|
a weight - they
make a strong structure when bonded
together Check how the walls of Aston Hall have been bonded together.
|
1. cold -
brick keeps in heat (insulates) 2.electricity - they will not carry an electrical charge 3. weather - bricks are hard-wearing and reasonably weatherproof 4. fire - they will blacken but not burn. A number of bricks burnt black in the simple kilns (ovens) set up near the building work at Aston Hall How were the black bricks used? Check |
1. if frozen -
bricks are not waterproof and will
slowly absorb water - if the water freezes and therefore
expands then the ice will lead to the bricks flaking
and breaking up 2. if knocked - bricks are brittle and will shatter - some bricks are stronger than others depending on the sort of clay used Find out what sort of clay is used to make the dark purple bricks used for railway bridges and old factories |