About this video
This video explains how concrete gets strong over time. It shows experiments to see how long it takes for concrete to harden. Concrete is used to build lots of things like houses and bridges!
🧠 Quiz & Trivia
Test your knowledge after watching!
Q1 What are the two main phases in concrete's life?
Answer: Workable and strong
Q2 What is added to sand, gravel, and water to make concrete?
Answer: Cement
Q3 What can happen if concrete isn't given enough time to cure?
Answer: It might not be strong enough
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