Practice Conducting Tests on Unsaturated Soils - 1.5 | 14. Unconfined Compression Test | Geotechnical Engineering - Vol 2
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Knowledge

1.5 - Conducting Tests on Unsaturated Soils

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the unconfined compressive strength called?

💡 Hint: Identify the term we use to represent maximum axial stress in an unconfined test.

Question 2

Easy

What is the confining pressure (σ3) during the unconfined compression test?

💡 Hint: Think about what 'unconfined' means in terms of pressure.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What does unsaturated refer to in unsaturated soils?

  • Fully water-saturated
  • Partially water-saturated
  • No water at all

💡 Hint: Consider what 'unsaturated' means in terms of water content.

Question 2

The unconfined compressive strength qu is equal to what during the test?

  • True
  • False

💡 Hint: Remember the definition of qu in the context of this test.

Solve 2 more questions and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A soil sample shows an unconfined compressive strength of 150 kPa and is tested under increasing levels of saturation. If the saturation increases to 80%, what would you predict occurs to the strength? Explain your reasoning.

💡 Hint: Recall the relationship between water content and soil stability.

Question 2

In a field study, a retaining wall is constructed on a saturated clay layer. Using the knowledge from the unconfined compression test, outline how you would evaluate its integrity following heavy rainfall.

💡 Hint: Investigate how the test may reveal changes in soil properties post-rainfall.

Challenge and get performance evaluation