1.3. Basic Soil Properties Relevant to Pavement Engineering

Try these first

1. 1.

   What does grain size distribution refer to in soil?

   Hint

   Think about the proportions of sand, silt, and clay.

2. 2.

   Define plasticity index.

   Hint

   It's a measure of moisture content in soil behavior.

3. 3.

   Which property measures the moisture content range where soil can deform plastically?

   • Plasticity Index
   • Grain Size Distribution
   • Compaction Characteristics

   Hint

   Remember, it connects liquid and plastic limits.

4. 4.

   True or False: The specific gravity of soil affects its structural behavior under loads.

   • True
   • False

   Hint

   Think about how heavier soils behave under loads.

5. 5.

   Given a soil sample with a high plasticity index, describe the potential impacts on pavement design and performance.

   Hint

   Consider how moisture affects size and strength.

6. 6.

   Analyze a scenario where a poorly graded soil is used in pavement subgrade. What might be the consequences?

   Hint

   Reflect on the relationship between drainage and load-bearing stability.