Practice Design Procedures (1.2) - Chemical Modification or Stabilization

Practice: Design Procedures

Lesson 1.2Chemical Modification or Stabilization

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8 questions

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2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What are the primary chemicals used for soil stabilization?
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Think of common construction materials.
Question 2.
What does plasticity index indicate?
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Consider soil behavior with moisture.
3Question 3.
What is one of the primary advantages of using quick lime in soil stabilization?
- Increased moisture retention
- Cementation of soil particles
- Reduction in heavy metals
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Consider the chemical reaction in stabilization.
4Question 4.
True or False: A strength gain of at least 700 kPa is needed for effective cement stabilization.
- True
- False
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Reflect on cement requirements.
Question 5.
Imagine you have a clay soil with a plasticity index indicating high plasticity. Discuss whether lime, cement, or a combination would be best suited for stabilization and why.
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Focus on the properties of the soil and benefits of each chemical.
Question 6.
Evaluate a soil stabilization project where the initial test shows only a 20 psi increase in strength with lime. What steps would you recommend to improve this outcome?
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Think about the ingredients and conditions for better stability.

4 more questions in this section. Enroll free to practise them all.