Sieve Analysis

Sieve Analysis

Key Concepts:

1. Purpose of Sieve Analysis:

   • To determine the particle size distribution of a granular material.

2. Equipment:

   • Sieves with different mesh sizes.
   • Weighing balance.
   • Mechanical shaker (optional).

3. Procedure:

   • Sample Preparation: Ensure a representative sample of the material.
   • Sieving: Arrange sieves in descending order of size. Place the sample on the top sieve and cover.
   • Shaking: Shake the stack for a set time period either manually or using a mechanical shaker.
   • Weighing: Weigh the material collected on each sieve.

4. Data Recording:

   • Record the weight of material retained on each sieve.
   • Calculate the percentage of total sample retained.

5. Result Interpretation:

   • Particle Size Distribution Curve: Plot percentage retained versus sieve size.
   • D-values: D10, D50, D90 provide insight into the distribution of particles.
   • Uniformity Coefficient (Cu): Cu = D60 / D10, indicates the range of particle sizes.
   • Coefficient of Gradation (Cc): Cc = (D30^2) / (D10 * D60), assesses the curve’s shape.

6. Applications:

   • Soil classification.
   • Quality control in construction materials.
   • Research and development in material sciences.