Flashcards in C2B - Building Materials Deck (13):
How do we get aluminium and iron ?
Extracting ores in rocks
How is glass made ?
Heating limestone, sand and soda together until they melt
What are bricks made from ?
Why is clay good for making bricks ?
It's soft when it is dug up making it easy to mould
If clay is soft how is it able to make a brick which needs to be hard ?
It needs to be fired at very high temperatures
What do you need to do to make cement ?
Heat limestone and clay
Explain the process of making cement ?
Powdered clay and powdered limestone are roasted in a rotating kiln to make a complex mixture if calcium and aluminium silicates.
Cement is mixed with water which gradually makes it set hard
Dan wants to make concrete. How would he ?
Mix cement with sand, aggregate and water
What is an advantage and disadvantage of concrete ?
A ; quick and cheap
D ; not aesthetically pleasing
Reinforced concrete is a what ?
How would you go about reinforcing concrete ?
Put in solid steel rods
What is an advantage of reinforced concrete ?
Hardness of concrete with the flexibility and strength of steel