1.5. Strength requirements for stabilization and modification

Try these first

1. 1.

   What is cementation?

   Hint

   Think about how glue holds objects together.

2. 2.

   List one chemical used in soil stabilization.

   Hint

   You can find it in construction materials.

3. 3.

   What is the minimum strength gain for lime stabilization?

   • 50 psi
   • 100 psi
   • 30 psi

   Hint

   Recall the specific figures mentioned in the section.

4. 4.

   True or False: Chemical stabilization should improve soil's plasticity index.

   • True
   • False

   Hint

   Think about the desired outcomes of chemical treatment.

5. 5.

   Design a test for soil that has been mixed with quick lime and compare its results against untreated soil.

   Hint

   Consider how you’ll measure success between the two samples.

6. 6.

   A construction site reports natural soil strength of 280 psi. You need to stabilize it with cement. Determine the minimum amount of cement needed if you aim for a strength of 390 psi.

   Hint

   Work out how much strength gain is required to meet your target.