Unit 1-2.4- Cement and concrete. Flashcards
1
Q
How do we make cement and what is the product?
A
Limestone is mixed with clay and heated 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 mortar used for?
A
To hold bricks together in buildings.
4
Q
How is concrete made?
A
By adding aggregate to cement, sand and water.
5
Q
What is aggregate
A
Small stones or crushed rocks.
