5.3.1. Objectives of Good Grading

Try these first

1. 1.

   What is grading in aggregates?

   Hint

   Think about the arrangement of various sizes.

2. 2.

   Name one objective of good grading.

   Hint

   Consider how it affects the structure.

3. 3.

   What is the main objective of good grading?

   • Increase void content
   • Reduce cement consumption
   • Add more aggregates

   Hint

   Think about how grading impacts costs.

4. 4.

   True or False: Well-graded aggregates are characterized by a range of sizes to minimize voids.

   • True
   • False

   Hint

   Recall the benefits of using different sizes.

5. 5.

   Given the properties of a poorly graded aggregate mix, how would you correct the grading to improve concrete strength?

   Hint

   Think about how different sizes contribute to packing and void reduction.

6. 6.

   Design a concrete mix plan that utilizes well-graded aggregates for a structural application. What factors must you consider?

   Hint

   Reflect on the objectives of good grading discussed earlier.