6.2. Types of Road Aggregates

Try these first

1. 1.

   What is the definition of natural aggregates?

   Hint

   Think about aggregates that occur naturally.

2. 2.

   Name one type of artificial aggregate.

   Hint

   Consider aggregates created through manufacturing processes.

3. 3.

   What are natural aggregates sourced from?

   • Industrial processes
   • Natural rock sources
   • Demolition sites

   Hint

   Think about where naturally occurring materials are found.

4. 4.

   True or False: Angular aggregates are less effective than rounded aggregates in road construction.

   • True
   • False

   Hint

   Think about how the shape contributes to performance.

5. 5.

   Evaluate the practical implications of using recycled aggregates in terms of cost and engineering performance. What factors could affect their use in high-load traffic applications?

   Hint

   Consider both the environmental and material quality perspectives.

6. 6.

   Analyze the effect of aggregate shape on the tensile strength of a concrete mix. How would you expect angular vs. rounded aggregates to perform differently?

   Hint

   Remember how shape affects contact surfaces in a mix.