Concrete

The video tutorial explores concrete, a vital construction material made from gravel, sand, cement, and water. It highlights concrete's historical use by ancient civilizations and its role in modern infrastructure. The composition of concrete, including its filler and binder components, is explained, along with the hydration process that hardens it. The video also covers cement production, its environmental impact, and the importance of recycling concrete to mitigate pollution and urban heat effects.

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