Concrete Aggregates Quiz
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Questions and Answers

What are aggregates in concrete primarily composed of?

  • Granular materials (correct)
  • Organic materials
  • Gaseous materials
  • Liquid materials

    • What is the definition of coarse aggregate?

  • Portion passing the 4.75 mm (No. 4) sieve
  • Granular material predominantly retained on the 4.75 mm (No. 4) sieve
  • Granular material predominantly retained on the 75 μm (No. 200) sieve
  • Portion retained on the 4.75 mm (No. 4) sieve (correct)

    • What are examples of lightweight aggregates used in concrete applications?

  • Barite, magnetite, hematite
  • Sand, gravel, slate
  • Perlite, pumice, volcanic cinders (correct)
  • Crushed stone, iron blast-furnace slag, shale

    • What percentage of the concrete mixture do coarse and fine aggregates constitute?

    <p>60 to 75 percent</p> Signup and view all the answers

    In which applications are heavyweight aggregates used in concrete mixtures?

    <p>Radiation shielding, ballast for offshore pipelines</p> Signup and view all the answers

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