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Biology, 20.07.2019 14:00 kcarstensen59070

Which category of materials does concrete belong to and why? a. it’s a synthetic polymer because it’s a product of a chemical reaction. b. it’s an alloy because it contains layers of different components. c. it’s a ceramic because it contains substances such as sand and clay. d. it’s a composite because it’s a mixture of cement, sand, and other granular pieces.

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Which category of materials does concrete belong to and why? a. it’s a synthetic polymer because it...
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