Cement and Concrete in Construction
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Questions and Answers

What is the primary purpose of cement in construction?

  • To provide color to the construction material
  • To bind sand and gravel together (correct)
  • To increase the flexibility of the material
  • To create a smooth finish on the surface

    • Which type of cement sets and becomes adhesive through a chemical reaction with water?

  • Portland cement (correct)
  • Calcium silicate based cement
  • Non-hydraulic cement
  • Lime plaster

    • What was the chemical process for hydraulic cement found by ancient Romans?

  • Reaction between lime and sand
  • Reaction between volcanic ash and water (correct)
  • Reaction between lime and carbon dioxide
  • Reaction between sand and water

    • Why is hydraulic cement durable in water and safe from chemical attack?

    <p>It forms water-soluble mineral hydrates</p> Signup and view all the answers

    How does non-hydraulic cement set?

    <p>By drying and reacting with carbon dioxide in the air</p> Signup and view all the answers

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