Tests on Coarse Aggregate

Crushing Value Test

• Purpose: Assesses aggregate resistance to crushing under compressive loads.
• Procedure:
  1. Place aggregate in a cylindrical mold.
  2. Apply a compressive load gradually.
  3. Calculate the crushing value as a percentage of original weight.

Impact Value Test

• Purpose: Measures resistance to sudden impact or shock.
• Procedure:
  1. Use an aggregate impact testing machine.
  2. Drop a standard hammer on the aggregates.
  3. Calculate the impact value.

Abrasion Test

• Purpose: Evaluates toughness and resistance to wear.
• Procedure: Use a Los Angeles abrasion machine to rotate aggregates and measure weight loss.

Sieve Analysis Test

• Purpose: Determines particle size distribution.
• Procedure:
  1. Pass aggregates through a series of sieves.
  2. Measure the weight retained on each sieve.