The ingredients of tarmac
Types of stone
What we use to make roads
Metals and sand
Ceramics and stone
Ground and baked minerals and oxides
A dry powder.
A modern material.
A mixture of cement and sand.
A mixture of cement, sand and water.
A soft paste normally used for aesthetic purposes,
A foam that we use between bricks
Gypsum in its natural form
A strong material for structures
A mass of very small particles of rock.
Clay after we fire it.
A modern artificial material
A natural material that has been used through history.