21.1. Overview

Try these first

1. 1.

   What are the main components of pavement material?

   Hint

   Think about what you drive on.

2. 2.

   Name one desirable property of subgrade soil.

   Hint

   Consider what would help support a road.

3. 3.

   Which material is most critical for pavement stability?

   • Asphalt
   • Soil
   • Aggregate
   • Concrete

   Hint

   Think about what lies beneath the road surface.

4. 4.

   True or False: The CBR test measures the strength of aggregates.

   • True
   • False

   Hint

   Recall the purpose of the test.

5. 5.

   Design a subgrade soil testing protocol for a new highway project. Include at least 3 types of tests and their significance.

   Hint

   Consider both laboratory and field tests.

6. 6.

   Analyze how different soil types affect pavement thickness in a flooding-prone area.

   Hint

   Think about contrasting soil permeabilities.