Deja Thompson

Physics

24 July, 21:23

Which category of materials does concrete belong to and why?

1. It's a synthetic polymer because it's a product of a chemical reaction.

2. It's an alloy because it contains layers of different components.

3. It's a ceramic because it contains substances such as sand and clay.

4. It's a composite because it's a mixture of cement, sand, and other granular pieces.