Introduction to Lime in Civil Engineering

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Questions and Answers

What is lime mixed with to form lime mortar?

  • Sand (correct)
  • Clay
  • Gravel
  • Cement

What percentage of calcium oxide does fat lime contain?

  • 95% (correct)
  • 60%
  • 100%
  • 80%

What happens when water is added to fat lime?

  • It remains unchanged
  • It slakes vigorously and its volume increases (correct)
  • It solidifies instantly
  • It turns into a gas

What does hydraulic lime contain?

<p>Clay and ferrous oxide (B)</p> Signup and view all the answers

What are the properties of fat lime?

<p>(a) Hardens slowly (b) Low plasticity (c) Sets slowly in the presence of air (d) White in colour (e) Does not slake vigorously (C)</p> Signup and view all the answers

Fat lime is composed of 95% calcium oxide

<p>True (A)</p> Signup and view all the answers

Hydraulic lime contains clay and ferrous oxide

<p>True (A)</p> Signup and view all the answers

Lime mixed with sand provides lime concrete

<p>False (B)</p> Signup and view all the answers

Lime hardens quickly in the presence of air

<p>False (B)</p> Signup and view all the answers

Lime mortar is formed by mixing lime with coarse aggregate

<p>False (B)</p> Signup and view all the answers

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Study Notes

Lime Composition

  • Fat lime is composed of 95% calcium oxide

Hydraulic Lime

  • Hydraulic lime contains clay and ferrous oxide

Lime Properties

  • Fat lime hardens quickly in the presence of air

Lime Mortar Formation

  • Lime mortar is formed by mixing lime with coarse aggregate

Lime Concrete

  • Lime mixed with sand provides lime concrete

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