What is the significance of the 'fineness modulus' in aggregate grading?
Practice Questions
Q1
What is the significance of the 'fineness modulus' in aggregate grading?
It indicates the color of the aggregate
It helps in determining the workability of concrete
It provides a measure of the average size of the particles
It has no significance
Questions & Step-by-Step Solutions
What is the significance of the 'fineness modulus' in aggregate grading?
Step 1: Understand what 'fineness modulus' means. It is a number that represents the average size of particles in a sample of aggregate (like sand or gravel).
Step 2: Know that aggregate is used in construction materials like concrete. The size of the particles affects how strong and durable the final product will be.
Step 3: Realize that a higher fineness modulus means larger average particle sizes, while a lower fineness modulus means smaller average particle sizes.
Step 4: Understand that the fineness modulus helps in grading the aggregate, which is important for ensuring the right mix for construction projects.
Step 5: Remember that proper grading leads to better workability, strength, and stability of the concrete or other materials made with the aggregate.
