1.2. Design Procedures

Try these first

1. 1.

   What are the primary chemicals used for soil stabilization?

   Hint

   Think of common construction materials.

2. 2.

   What does plasticity index indicate?

   Hint

   Consider soil behavior with moisture.

3. 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

   Hint

   Consider the chemical reaction in stabilization.

4. 4.

   True or False: A strength gain of at least 700 kPa is needed for effective cement stabilization.

   • True
   • False

   Hint

   Reflect on cement requirements.

5. 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.

   Hint

   Focus on the properties of the soil and benefits of each chemical.

6. 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?

   Hint

   Think about the ingredients and conditions for better stability.