Concrete

We see concrete everywhere, in buildings, roads, driveways, walls, and so on.

What is Concrete?
Why Concrete Needs Reinforcement (rebar etc.)

Using concrete

https://www.youtube.com/watch?v=12oynGTjYKs
How they build the world’s tallest building Burj Khalifa – Construction Documentary
How does a prestressed precast concrete bridge beam work?
World Amazing Modern Concrete Paving Machine – Latest Technology Construction Equipment Machinery

Concrete comes from cement, which is made in a cement kiln

Cement, how it is made.

Roman concrete

Was Roman Concrete Better?
How To Make Roman Concrete

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