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Pre-Cast Concrete Walls | How It s Made

4,598 ビュー· 10/24/23
Science Channel
Science Channel
1,316 加入者
1,316
Discovery

A mix of limestone gravel, minerals and additives are mixed into a slurry. After a test sample is hardened and tested, workers pour it into pre-made molds. | http://www.sciencechannel.com/tv-shows/...

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