5.1.B.1. Natural Aggregates

Try these first

1. 1.

   What type of aggregates pass through a 4.75 mm sieve?

   Hint

   Remember the sieve size that separates fine from coarse.

2. 2.

   Name one property affected by the shape of aggregates.

   Hint

   Think about how rough vs smooth aggregates behave in concrete.

3. 3.

   Which type of aggregate is comprised of particles larger than 4.75 mm?

   • Fine Aggregate
   • Coarse Aggregate
   • Natural Aggregate

   Hint

   Recall the sieve classification details.

4. 4.

   True or False: Grading helps in achieving maximum density in concrete.

   • True
   • False

   Hint

   Consider how particle distribution affects overall density.

5. 5.

   Analyze a mix design scenario where only recycled aggregates are available and compare its expected performance to that using natural aggregates.

   Hint

   Think about initial costs versus long-term benefits.

6. 6.

   Design an experiment to measure the water absorption of different aggregate types. What materials and methods will you use?

   Hint

   What are the key steps? Think about safety and accuracy.