Whats heavier when set up, cement or plaster?

Question:

Answers:
Cement is heavier because its much more dense than plaster.

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Cement-- concrete that is, a lot of bonding agents are also called "cement"-- is heavier, because the water stays in it when it is set. Plaster sets up with the water dried out of it.

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There is a reason they use cement for sidewalks and plaster for walls . can you answer your own question now?

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