2.4 - Cement and concrete Flashcards
1
Q
How is cement made?
A
- Limestone
- is mixed with clay
- and heated strongly in a kiln.
- The product is ground up to make a fine powder
2
Q
How is mortar made?
A
- Cement
- is mixed with sand and water
3
Q
What is the use of mortar?
A
It is used to hold bricks and blocks together in buildings
4
Q
How is concrete made?
A
- Adding aggregate to
- cement, sand and water
5
Q
What can be used as aggregate?
A
Small stones or crushed rock
6
Q
What is a use of concrete?
A
It can be poured into moulds before it sets to form a hard solid
